64064431 has 8 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 62110488.

The previous prime is 64064419. The next prime is 64064443. The reversal of 64064431 is 13446046.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64064419) and next prime (64064443).

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 64064431 - 2⁷ = 64064303 is a prime.

It is a super-2 number, since 2×64064431² = 8208502638707522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64064431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64064411) 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, 1341 + ... + 11398.

It is an arithmetic number, because the mean of its divisors is an integer number (8255520).

Almost surely, 2^64064431 is an apocalyptic number.

64064431 is a deficient number, since it is larger than the sum of its proper divisors (1979729).

64064431 is a wasteful number, since it uses less digits than its factorization.

64064431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893.

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

The square root of 64064431 is about 8004.0259244957. The cubic root of 64064431 is about 400.1341862301.

The spelling of 64064431 in words is "sixty-four million, sixty-four thousand, four hundred thirty-one".