64370121 has 16 divisors (see below), whose sum is σ = 89649600. Its totient is φ = 41041728.

The previous prime is 64370113. The next prime is 64370147. The reversal of 64370121 is 12107346.

It is not a de Polignac number, because 64370121 - 2³ = 64370113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64370091 and 64370100.

It is not an unprimeable number, because it can be changed into a prime (64370101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1635 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (5603100).

Almost surely, 2^64370121 is an apocalyptic number.

It is an amenable number.

64370121 is a deficient number, since it is larger than the sum of its proper divisors (25279479).

64370121 is a wasteful number, since it uses less digits than its factorization.

64370121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9928.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 64370121 is about 8023.0992141441. The cubic root of 64370121 is about 400.7696037422.

Adding to 64370121 its reverse (12107346), we get a palindrome (76477467).

The spelling of 64370121 in words is "sixty-four million, three hundred seventy thousand, one hundred twenty-one".