1997460 has 84 divisors (see below), whose sum is σ = 6335028. Its totient is φ = 528768.

The previous prime is 1997459. The next prime is 1997467. The reversal of 1997460 is 647991.

1997460 is a `hidden beast` number, since 199 + 7 + 460 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 944784 + 1052676 = 972^2 + 1026^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997467) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 14512 + ... + 14648.

It is an arithmetic number, because the mean of its divisors is an integer number (75417).

2^1997460 is an apocalyptic number.

1997460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1997460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3167514).

1997460 is an abundant number, since it is smaller than the sum of its proper divisors (4337568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1997460 is a wasteful number, since it uses less digits than its factorization.

1997460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1997460 is about 1413.3152514567. The cubic root of 1997460 is about 125.9387457366.

It can be divided in two parts, 19 and 97460, that added together give a palindrome (97479).

The spelling of 1997460 in words is "one million, nine hundred ninety-seven thousand, four hundred sixty".