64901121 has 16 divisors (see below), whose sum is σ = 93182400. Its totient is φ = 40030208.

The previous prime is 64901117. The next prime is 64901143. The reversal of 64901121 is 12110946.

It is a cyclic number.

It is not a de Polignac number, because 64901121 - 2² = 64901117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64901091 and 64901100.

It is not an unprimeable number, because it can be changed into a prime (64901821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7776 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (5823900).

Almost surely, 2^64901121 is an apocalyptic number.

It is an amenable number.

64901121 is a deficient number, since it is larger than the sum of its proper divisors (28281279).

64901121 is a wasteful number, since it uses less digits than its factorization.

64901121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21648.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 64901121 is about 8056.1231991573. The cubic root of 64901121 is about 401.8685927271.

The spelling of 64901121 in words is "sixty-four million, nine hundred one thousand, one hundred twenty-one".