64630655 has 8 divisors (see below), whose sum is σ = 77652432. Its totient is φ = 51640768.

The previous prime is 64630649. The next prime is 64630663. The reversal of 64630655 is 55603646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64630655 - 2⁴ = 64630639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3257 + ... + 11826.

It is an arithmetic number, because the mean of its divisors is an integer number (9706554).

Almost surely, 2^64630655 is an apocalyptic number.

64630655 is a deficient number, since it is larger than the sum of its proper divisors (13021777).

64630655 is a wasteful number, since it uses less digits than its factorization.

64630655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15945.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 64630655 is about 8039.3193119816. The cubic root of 64630655 is about 401.3095724544.

The spelling of 64630655 in words is "sixty-four million, six hundred thirty thousand, six hundred fifty-five".