705290690 has 32 divisors (see below), whose sum is σ = 1377976320. Its totient is φ = 258358464.

The previous prime is 705290683. The next prime is 705290693. The reversal of 705290690 is 96092507.

It is a super-2 number, since 2×705290690² = 994869914801352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (705290693) 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, 4850 + ... + 37869.

It is an arithmetic number, because the mean of its divisors is an integer number (43061760).

Almost surely, 2^705290690 is an apocalyptic number.

705290690 is a deficient number, since it is larger than the sum of its proper divisors (672685630).

705290690 is a wasteful number, since it uses less digits than its factorization.

705290690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42866.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 705290690 is about 26557.3095399365. The cubic root of 705290690 is about 890.1353537354.

The spelling of 705290690 in words is "seven hundred five million, two hundred ninety thousand, six hundred ninety".