1906497 has 10 divisors (see below), whose sum is σ = 2848098. Its totient is φ = 1270944.

The previous prime is 1906481. The next prime is 1906511. The reversal of 1906497 is 7946091.

1906497 is a `hidden beast` number, since 1 + 9 + 0 + 649 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1498176 + 408321 = 1224^2 + 639^2 .

It is not a de Polignac number, because 1906497 - 2⁴ = 1906481 is a prime.

It is a super-2 number, since 2×1906497² = 7269461622018, which contains 22 as substring.

1906497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1906417) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11688 + ... + 11849.

2^1906497 is an apocalyptic number.

It is an amenable number.

1906497 is a deficient number, since it is larger than the sum of its proper divisors (941601).

1906497 is an equidigital number, since it uses as much as digits as its factorization.

1906497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23549 (or 23540 counting only the distinct ones).

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

The square root of 1906497 is about 1380.7595735681. The cubic root of 1906497 is about 123.9972467304.

The spelling of 1906497 in words is "one million, nine hundred six thousand, four hundred ninety-seven".