64155746 has 4 divisors (see below), whose sum is σ = 96233622. Its totient is φ = 32077872.

The previous prime is 64155737. The next prime is 64155757. The reversal of 64155746 is 64755146.

64155746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49632025 + 14523721 = 7045^2 + 3811^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16038935 + ... + 16038938.

Almost surely, 2^64155746 is an apocalyptic number.

64155746 is a deficient number, since it is larger than the sum of its proper divisors (32077876).

64155746 is a wasteful number, since it uses less digits than its factorization.

64155746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32077875.

The product of its digits is 100800, while the sum is 38.

The square root of 64155746 is about 8009.7282101205. The cubic root of 64155746 is about 400.3242079853.

The spelling of 64155746 in words is "sixty-four million, one hundred fifty-five thousand, seven hundred forty-six".