705806730 has 64 divisors (see below), whose sum is σ = 1925953920. Its totient is φ = 183835008.

The previous prime is 705806723. The next prime is 705806747. The reversal of 705806730 is 37608507.

705806730 is a `hidden beast` number, since 7 + 0 + 580 + 6 + 73 + 0 = 666.

It is a super-2 number, since 2×705806730² = 996326280226585800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18787 + ... + 42006.

It is an arithmetic number, because the mean of its divisors is an integer number (30093030).

Almost surely, 2^705806730 is an apocalyptic number.

705806730 is an abundant number, since it is smaller than the sum of its proper divisors (1220147190).

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

705806730 is a wasteful number, since it uses less digits than its factorization.

705806730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60852 (or 60846 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 705806730 is about 26567.0233560329. The cubic root of 705806730 is about 890.3523959045.

The spelling of 705806730 in words is "seven hundred five million, eight hundred six thousand, seven hundred thirty".