705121064 has 8 divisors (see below), whose sum is σ = 1322102010. Its totient is φ = 352560528.

The previous prime is 705121049. The next prime is 705121073. The reversal of 705121064 is 460121507.

It can be written as a sum of positive squares in only one way, i.e., 576480100 + 128640964 = 24010^2 + 11342^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44070059 + ... + 44070074.

Almost surely, 2^705121064 is an apocalyptic number.

It is an amenable number.

705121064 is a deficient number, since it is larger than the sum of its proper divisors (616980946).

705121064 is a wasteful number, since it uses less digits than its factorization.

705121064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88140139 (or 88140135 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 705121064 is about 26554.1157638510. The cubic root of 705121064 is about 890.0639873197.

The spelling of 705121064 in words is "seven hundred five million, one hundred twenty-one thousand, sixty-four".