40664001 has 8 divisors (see below), whose sum is σ = 61964224. Its totient is φ = 23236560.

The previous prime is 40663991. The next prime is 40664027. The reversal of 40664001 is 10046604.

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

It is not a de Polignac number, because 40664001 - 2⁶ = 40663937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1936381 = 40664001 / (4 + 0 + 6 + 6 + 4 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (40664081) 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, 968170 + ... + 968211.

It is an arithmetic number, because the mean of its divisors is an integer number (7745528).

Almost surely, 2^40664001 is an apocalyptic number.

It is an amenable number.

40664001 is a deficient number, since it is larger than the sum of its proper divisors (21300223).

40664001 is a wasteful number, since it uses less digits than its factorization.

40664001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936391.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40664001 is about 6376.8331482014. The cubic root of 40664001 is about 343.8771899138.

The spelling of 40664001 in words is "forty million, six hundred sixty-four thousand, one".