40631601 has 8 divisors (see below), whose sum is σ = 54500544. Its totient is φ = 26925200.

The previous prime is 40631599. The next prime is 40631609. The reversal of 40631601 is 10613604.

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 40631601 - 2¹ = 40631599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40631609) 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, 40050 + ... + 41051.

It is an arithmetic number, because the mean of its divisors is an integer number (6812568).

Almost surely, 2^40631601 is an apocalyptic number.

It is an amenable number.

40631601 is a deficient number, since it is larger than the sum of its proper divisors (13868943).

40631601 is a wasteful number, since it uses less digits than its factorization.

40631601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81271.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40631601 is about 6374.2921960011. The cubic root of 40631601 is about 343.7858348978.

The spelling of 40631601 in words is "forty million, six hundred thirty-one thousand, six hundred one".