47643864 has 32 divisors (see below), whose sum is σ = 122331120. Its totient is φ = 15451776.

The previous prime is 47643847. The next prime is 47643881. The reversal of 47643864 is 46834674.

It is an interprime number because it is at equal distance from previous prime (47643847) and next prime (47643881).

It is a congruent number.

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, 25939 + ... + 27714.

Almost surely, 2^47643864 is an apocalyptic number.

It is an amenable number.

47643864 is an abundant number, since it is smaller than the sum of its proper divisors (74687256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47643864 is a wasteful number, since it uses less digits than its factorization.

47643864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53699 (or 53695 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The square root of 47643864 is about 6902.4534768443. The cubic root of 47643864 is about 362.5230780393.

The spelling of 47643864 in words is "forty-seven million, six hundred forty-three thousand, eight hundred sixty-four".