64870476 has 96 divisors (see below), whose sum is σ = 173408256. Its totient is φ = 18696000.

The previous prime is 64870469. The next prime is 64870489. The reversal of 64870476 is 67407846.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339541 + ... + 339731.

It is an arithmetic number, because the mean of its divisors is an integer number (1806336).

Almost surely, 2^64870476 is an apocalyptic number.

64870476 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64870476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86704128).

64870476 is an abundant number, since it is smaller than the sum of its proper divisors (108537780).

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

64870476 is a wasteful number, since it uses less digits than its factorization.

64870476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 64870476 is about 8054.2210051624. The cubic root of 64870476 is about 401.8053313551.

It can be divided in two parts, 64 and 870476, that added together give a triangular number (870540 = T₁₃₁₉).

The spelling of 64870476 in words is "sixty-four million, eight hundred seventy thousand, four hundred seventy-six".