64857467 has 4 divisors (see below), whose sum is σ = 64879056. Its totient is φ = 64835880.

The previous prime is 64857451. The next prime is 64857491. The reversal of 64857467 is 76475846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64857467 - 2⁴ = 64857451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64857437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5384 + ... + 12597.

It is an arithmetic number, because the mean of its divisors is an integer number (16219764).

Almost surely, 2^64857467 is an apocalyptic number.

64857467 is a deficient number, since it is larger than the sum of its proper divisors (21589).

64857467 is a wasteful number, since it uses less digits than its factorization.

64857467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21588.

The product of its digits is 1128960, while the sum is 47.

The square root of 64857467 is about 8053.4133757060. The cubic root of 64857467 is about 401.7784704711.

The spelling of 64857467 in words is "sixty-four million, eight hundred fifty-seven thousand, four hundred sixty-seven".