707021201664 has 144 divisors (see below), whose sum is σ = 2104821264000. Its totient is φ = 234091689984.

The previous prime is 707021201659. The next prime is 707021201671. The reversal of 707021201664 is 466102120707.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686637 + ... + 1373139.

Almost surely, 2^707021201664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 707021201664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1052410632000).

707021201664 is an abundant number, since it is smaller than the sum of its proper divisors (1397800062336).

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

707021201664 is a wasteful number, since it uses less digits than its factorization.

707021201664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686677 (or 686657 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 707021201664 in words is "seven hundred seven billion, twenty-one million, two hundred one thousand, six hundred sixty-four".