64872550 has 12 divisors (see below), whose sum is σ = 120663036. Its totient is φ = 25949000.

The previous prime is 64872529. The next prime is 64872589. The reversal of 64872550 is 5527846.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 648676 + ... + 648775.

It is an arithmetic number, because the mean of its divisors is an integer number (10055253).

Almost surely, 2^64872550 is an apocalyptic number.

64872550 is a deficient number, since it is larger than the sum of its proper divisors (55790486).

64872550 is a wasteful number, since it uses less digits than its factorization.

64872550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297463 (or 1297458 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 64872550 is about 8054.3497564980. The cubic root of 64872550 is about 401.8096134026.

The spelling of 64872550 in words is "sixty-four million, eight hundred seventy-two thousand, five hundred fifty".