40645610 has 24 divisors (see below), whose sum is σ = 75218220. Its totient is φ = 15813504.

The previous prime is 40645609. The next prime is 40645639. The reversal of 40645610 is 1654604.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 21557449 + 19088161 = 4643^2 + 4369^2 .

It is a super-2 number, since 2×40645610² = 3304131224544200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40645610.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12206 + ... + 15174.

Almost surely, 2^40645610 is an apocalyptic number.

40645610 is a deficient number, since it is larger than the sum of its proper divisors (34572610).

40645610 is a wasteful number, since it uses less digits than its factorization.

40645610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050 (or 3013 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40645610 is about 6375.3909684034. The cubic root of 40645610 is about 343.8253406212.

The spelling of 40645610 in words is "forty million, six hundred forty-five thousand, six hundred ten".