64928955 has 48 divisors (see below), whose sum is σ = 128597760. Its totient is φ = 27391104.

The previous prime is 64928951. The next prime is 64928957. The reversal of 64928955 is 55982946.

It is not a de Polignac number, because 64928955 - 2² = 64928951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64928951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15916 + ... + 19574.

It is an arithmetic number, because the mean of its divisors is an integer number (2679120).

Almost surely, 2^64928955 is an apocalyptic number.

64928955 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64928955 is a deficient number, since it is larger than the sum of its proper divisors (63668805).

64928955 is a wasteful number, since it uses less digits than its factorization.

64928955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700 (or 3687 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 64928955 is about 8057.8505198347. The cubic root of 64928955 is about 401.9260340140.

The spelling of 64928955 in words is "sixty-four million, nine hundred twenty-eight thousand, nine hundred fifty-five".