40606657 has 8 divisors (see below), whose sum is σ = 49977536. Its totient is φ = 32128272.

The previous prime is 40606651. The next prime is 40606669. The reversal of 40606657 is 75660604.

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

It is a cyclic number.

It is not a de Polignac number, because 40606657 - 2²³ = 32218049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40606651) 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, 223023 + ... + 223204.

It is an arithmetic number, because the mean of its divisors is an integer number (6247192).

Almost surely, 2^40606657 is an apocalyptic number.

It is an amenable number.

40606657 is a deficient number, since it is larger than the sum of its proper divisors (9370879).

40606657 is a wasteful number, since it uses less digits than its factorization.

40606657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446247.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 40606657 is about 6372.3352862196. The cubic root of 40606657 is about 343.7154697216.

The spelling of 40606657 in words is "forty million, six hundred six thousand, six hundred fifty-seven".