64220377 has 8 divisors (see below), whose sum is σ = 70632576. Its totient is φ = 58018512.

The previous prime is 64220369. The next prime is 64220411. The reversal of 64220377 is 77302246.

It is a happy number.

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 64220377 - 2³ = 64220369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64220327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51943 + ... + 53164.

It is an arithmetic number, because the mean of its divisors is an integer number (8829072).

Almost surely, 2^64220377 is an apocalyptic number.

It is an amenable number.

64220377 is a deficient number, since it is larger than the sum of its proper divisors (6412199).

64220377 is a wasteful number, since it uses less digits than its factorization.

64220377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105167.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 64220377 is about 8013.7617259312. The cubic root of 64220377 is about 400.4585927807.

The spelling of 64220377 in words is "sixty-four million, two hundred twenty thousand, three hundred seventy-seven".