705137394 has 16 divisors (see below), whose sum is σ = 1518757632. Its totient is φ = 216965328.

The previous prime is 705137357. The next prime is 705137437. The reversal of 705137394 is 493731507.

It is a happy number.

It is a super-2 number, since 2×705137394² = 994437488834222472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520034 + ... + 4520189.

It is an arithmetic number, because the mean of its divisors is an integer number (94922352).

Almost surely, 2^705137394 is an apocalyptic number.

705137394 is an abundant number, since it is smaller than the sum of its proper divisors (813620238).

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

705137394 is a wasteful number, since it uses less digits than its factorization.

705137394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9040241.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 705137394 is about 26554.4232473613. The cubic root of 705137394 is about 890.0708583065.

The spelling of 705137394 in words is "seven hundred five million, one hundred thirty-seven thousand, three hundred ninety-four".