64651942 has 8 divisors (see below), whose sum is σ = 101194416. Its totient is φ = 30920472.

The previous prime is 64651903. The next prime is 64651943. The reversal of 64651942 is 24915646.

64651942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64651943) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 702693 + ... + 702784.

It is an arithmetic number, because the mean of its divisors is an integer number (12649302).

Almost surely, 2^64651942 is an apocalyptic number.

64651942 is a deficient number, since it is larger than the sum of its proper divisors (36542474).

64651942 is a wasteful number, since it uses less digits than its factorization.

64651942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405502.

The product of its digits is 51840, while the sum is 37.

The square root of 64651942 is about 8040.6431334813. The cubic root of 64651942 is about 401.3536265706.

The spelling of 64651942 in words is "sixty-four million, six hundred fifty-one thousand, nine hundred forty-two".