64904730 has 32 divisors (see below), whose sum is σ = 169933248. Its totient is φ = 15734400.

The previous prime is 64904711. The next prime is 64904753. The reversal of 64904730 is 3740946.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64904691 and 64904700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98011 + ... + 98670.

It is an arithmetic number, because the mean of its divisors is an integer number (5310414).

Almost surely, 2^64904730 is an apocalyptic number.

64904730 is an abundant number, since it is smaller than the sum of its proper divisors (105028518).

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

64904730 is a wasteful number, since it uses less digits than its factorization.

64904730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196702.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 64904730 is about 8056.3471871562. The cubic root of 64904730 is about 401.8760415808.

The spelling of 64904730 in words is "sixty-four million, nine hundred four thousand, seven hundred thirty".