64377951 has 16 divisors (see below), whose sum is σ = 94384128. Its totient is φ = 38707200.

The previous prime is 64377931. The next prime is 64377959. The reversal of 64377951 is 15977346.

It is not a de Polignac number, because 64377951 - 2⁵ = 64377919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64377959) 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, 3490 + ... + 11871.

It is an arithmetic number, because the mean of its divisors is an integer number (5899008).

Almost surely, 2^64377951 is an apocalyptic number.

64377951 is a deficient number, since it is larger than the sum of its proper divisors (30006177).

64377951 is a wasteful number, since it uses less digits than its factorization.

64377951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15502.

The product of its digits is 158760, while the sum is 42.

The square root of 64377951 is about 8023.5871653519. The cubic root of 64377951 is about 400.7858529933.

It can be divided in two parts, 64 and 377951, that added together give a triangular number (378015 = T₈₆₉).

The spelling of 64377951 in words is "sixty-four million, three hundred seventy-seven thousand, nine hundred fifty-one".