64121377 has 8 divisors (see below), whose sum is σ = 66038400. Its totient is φ = 62232144.

The previous prime is 64121363. The next prime is 64121383. The reversal of 64121377 is 77312146.

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 64121377 - 2⁷ = 64121249 is a prime.

It is a super-2 number, since 2×64121377² = 8223101976752258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64121347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2218 + ... + 11539.

It is an arithmetic number, because the mean of its divisors is an integer number (8254800).

Almost surely, 2^64121377 is an apocalyptic number.

It is an amenable number.

64121377 is a deficient number, since it is larger than the sum of its proper divisors (1917023).

64121377 is a wasteful number, since it uses less digits than its factorization.

64121377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13895.

The product of its digits is 7056, while the sum is 31.

The square root of 64121377 is about 8007.5824691351. The cubic root of 64121377 is about 400.2527090617.

The spelling of 64121377 in words is "sixty-four million, one hundred twenty-one thousand, three hundred seventy-seven".