64747630 has 16 divisors (see below), whose sum is σ = 122680080. Its totient is φ = 24535872.

The previous prime is 64747621. The next prime is 64747643. The reversal of 64747630 is 3674746.

It is a self number, because there is not a number n which added to its sum of digits gives 64747630.

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, 170199 + ... + 170578.

It is an arithmetic number, because the mean of its divisors is an integer number (7667505).

Almost surely, 2^64747630 is an apocalyptic number.

64747630 is a deficient number, since it is larger than the sum of its proper divisors (57932450).

64747630 is a wasteful number, since it uses less digits than its factorization.

64747630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340803.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 64747630 is about 8046.5912037334. The cubic root of 64747630 is about 401.5515365546.

The spelling of 64747630 in words is "sixty-four million, seven hundred forty-seven thousand, six hundred thirty".