1670740 has 12 divisors (see below), whose sum is σ = 3508596. Its totient is φ = 668288.

The previous prime is 1670723. The next prime is 1670741. The reversal of 1670740 is 470761.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 352836 = 1148^2 + 594^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41749 + ... + 41788.

It is an arithmetic number, because the mean of its divisors is an integer number (292383).

2^1670740 is an apocalyptic number.

1670740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670740 is an abundant number, since it is smaller than the sum of its proper divisors (1837856).

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

1670740 is a wasteful number, since it uses less digits than its factorization.

1670740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83546 (or 83544 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1670740 is about 1292.5710812176. The cubic root of 1670740 is about 118.6596209819.

It can be divided in two parts, 16 and 70740, that added together give a square (70756 = 266²).

The spelling of 1670740 in words is "one million, six hundred seventy thousand, seven hundred forty".