64893670 has 8 divisors (see below), whose sum is σ = 116808624. Its totient is φ = 25957464.

The previous prime is 64893643. The next prime is 64893713. The reversal of 64893670 is 7639846.

It is a happy number.

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

It is a super-2 number, since 2×64893670² = 8422376812137800, which contains 22 as substring.

It is a congruent number.

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, 3244674 + ... + 3244693.

It is an arithmetic number, because the mean of its divisors is an integer number (14601078).

Almost surely, 2^64893670 is an apocalyptic number.

64893670 is a deficient number, since it is larger than the sum of its proper divisors (51914954).

64893670 is a wasteful number, since it uses less digits than its factorization.

64893670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489374.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 64893670 is about 8055.6607426083. The cubic root of 64893670 is about 401.8532132420.

The spelling of 64893670 in words is "sixty-four million, eight hundred ninety-three thousand, six hundred seventy".