40704657 has 8 divisors (see below), whose sum is σ = 62026176. Its totient is φ = 23259792.

The previous prime is 40704649. The next prime is 40704667. The reversal of 40704657 is 75640704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40704657 - 2³ = 40704649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40704607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969138 + ... + 969179.

It is an arithmetic number, because the mean of its divisors is an integer number (7753272).

Almost surely, 2^40704657 is an apocalyptic number.

It is an amenable number.

40704657 is a deficient number, since it is larger than the sum of its proper divisors (21321519).

40704657 is a wasteful number, since it uses less digits than its factorization.

40704657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938327.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 40704657 is about 6380.0201410340. The cubic root of 40704657 is about 343.9917549178.

The spelling of 40704657 in words is "forty million, seven hundred four thousand, six hundred fifty-seven".