64706476477 has 16 divisors (see below), whose sum is σ = 65470591872. Its totient is φ = 63947848000.

The previous prime is 64706476409. The next prime is 64706476487. The reversal of 64706476477 is 77467460746.

It is a cyclic number.

It is not a de Polignac number, because 64706476477 - 2³⁵ = 30346738109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64706476487) 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, 32400843 + ... + 32402839.

It is an arithmetic number, because the mean of its divisors is an integer number (4091911992).

Almost surely, 2^64706476477 is an apocalyptic number.

It is an amenable number.

64706476477 is a deficient number, since it is larger than the sum of its proper divisors (764115395).

64706476477 is a wasteful number, since it uses less digits than its factorization.

64706476477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188.

The product of its (nonzero) digits is 33191424, while the sum is 58.

The spelling of 64706476477 in words is "sixty-four billion, seven hundred six million, four hundred seventy-six thousand, four hundred seventy-seven".