64404465 has 8 divisors (see below), whose sum is σ = 103047168. Its totient is φ = 34349040.

The previous prime is 64404421. The next prime is 64404479. The reversal of 64404465 is 56440446.

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

It is not a de Polignac number, because 64404465 - 2⁷ = 64404337 is a prime.

It is a super-2 number, since 2×64404465² = 8295870223872450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146801 + ... + 2146830.

It is an arithmetic number, because the mean of its divisors is an integer number (12880896).

Almost surely, 2^64404465 is an apocalyptic number.

It is an amenable number.

64404465 is a deficient number, since it is larger than the sum of its proper divisors (38642703).

64404465 is a wasteful number, since it uses less digits than its factorization.

64404465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293639.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 64404465 is about 8025.2392487701. The cubic root of 64404465 is about 400.8408665367.

The spelling of 64404465 in words is "sixty-four million, four hundred four thousand, four hundred sixty-five".