40641634 has 8 divisors (see below), whose sum is σ = 66504528. Its totient is φ = 18473460.

The previous prime is 40641617. The next prime is 40641649. The reversal of 40641634 is 43614604.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 923652 + ... + 923695.

It is an arithmetic number, because the mean of its divisors is an integer number (8313066).

Almost surely, 2^40641634 is an apocalyptic number.

40641634 is a deficient number, since it is larger than the sum of its proper divisors (25862894).

40641634 is a wasteful number, since it uses less digits than its factorization.

40641634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847360.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40641634 is about 6375.0791367637. The cubic root of 40641634 is about 343.8141291264.

The spelling of 40641634 in words is "forty million, six hundred forty-one thousand, six hundred thirty-four".