630758690 has 16 divisors (see below), whose sum is σ = 1150919928. Its totient is φ = 248846976.

The previous prime is 630758683. The next prime is 630758717. The reversal of 630758690 is 96857036.

It can be written as a sum of positive squares in 4 ways, for example, as 560316241 + 70442449 = 23671^2 + 8393^2 .

It is a super-2 number, since 2×630758690² = 795713050021032200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431297 + ... + 432756.

Almost surely, 2^630758690 is an apocalyptic number.

630758690 is a deficient number, since it is larger than the sum of its proper divisors (520161238).

630758690 is a wasteful number, since it uses less digits than its factorization.

630758690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864133.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 630758690 is about 25114.9097151473. The cubic root of 630758690 is about 857.6058750633.

The spelling of 630758690 in words is "six hundred thirty million, seven hundred fifty-eight thousand, six hundred ninety".