64677792260 has 12 divisors (see below), whose sum is σ = 135823363788. Its totient is φ = 25871116896.

The previous prime is 64677792239. The next prime is 64677792301. The reversal of 64677792260 is 6229777646.

It can be written as a sum of positive squares in 2 ways, for example, as 46111549696 + 18566242564 = 214736^2 + 136258^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64677792196 and 64677792205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616944787 + ... + 1616944826.

It is an arithmetic number, because the mean of its divisors is an integer number (11318613649).

Almost surely, 2^64677792260 is an apocalyptic number.

It is an amenable number.

64677792260 is an abundant number, since it is smaller than the sum of its proper divisors (71145571528).

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

64677792260 is a wasteful number, since it uses less digits than its factorization.

64677792260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233889622 (or 3233889620 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 64677792260 in words is "sixty-four billion, six hundred seventy-seven million, seven hundred ninety-two thousand, two hundred sixty".