40683690 has 24 divisors (see below), whose sum is σ = 105777828. Its totient is φ = 10848960.

The previous prime is 40683667. The next prime is 40683691. The reversal of 40683690 is 9638604.

It can be written as a sum of positive squares in 2 ways, for example, as 34468641 + 6215049 = 5871^2 + 2493^2 .

It is a super-2 number, since 2×40683690² = 3310325264032200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40683691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225931 + ... + 226110.

Almost surely, 2^40683690 is an apocalyptic number.

40683690 is an abundant number, since it is smaller than the sum of its proper divisors (65094138).

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

40683690 is a wasteful number, since it uses less digits than its factorization.

40683690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452054 (or 452051 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 40683690 is about 6378.3767527483. The cubic root of 40683690 is about 343.9326813015.

The spelling of 40683690 in words is "forty million, six hundred eighty-three thousand, six hundred ninety".