64767996 has 36 divisors (see below), whose sum is σ = 163963800. Its totient is φ = 21557088.

The previous prime is 64767973. The next prime is 64768001. The reversal of 64767996 is 69976746.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44610 + ... + 46038.

It is an arithmetic number, because the mean of its divisors is an integer number (4554550).

Almost surely, 2^64767996 is an apocalyptic number.

It is an amenable number.

64767996 is an abundant number, since it is smaller than the sum of its proper divisors (99195804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64767996 is a wasteful number, since it uses less digits than its factorization.

64767996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698 (or 2693 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 64767996 is about 8047.8566090606. The cubic root of 64767996 is about 401.5936340610.

The spelling of 64767996 in words is "sixty-four million, seven hundred sixty-seven thousand, nine hundred ninety-six".