64620355 has 8 divisors (see below), whose sum is σ = 77686992. Its totient is φ = 51601248.

The previous prime is 64620343. The next prime is 64620379. The reversal of 64620355 is 55302646.

64620355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64620355 - 2⁹ = 64619843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8817 + ... + 14386.

It is an arithmetic number, because the mean of its divisors is an integer number (9710874).

Almost surely, 2^64620355 is an apocalyptic number.

64620355 is a deficient number, since it is larger than the sum of its proper divisors (13066637).

64620355 is a wasteful number, since it uses less digits than its factorization.

64620355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23765.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 64620355 is about 8038.6786849581. The cubic root of 64620355 is about 401.2882528076.

The spelling of 64620355 in words is "sixty-four million, six hundred twenty thousand, three hundred fifty-five".