990520670 has 8 divisors (see below), whose sum is σ = 1782937224. Its totient is φ = 396208264.

The previous prime is 990520633. The next prime is 990520679. The reversal of 990520670 is 76025099.

990520670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×990520670² = 1962262395394497800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990520679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49526024 + ... + 49526043.

It is an arithmetic number, because the mean of its divisors is an integer number (222867153).

Almost surely, 2^990520670 is an apocalyptic number.

990520670 is a deficient number, since it is larger than the sum of its proper divisors (792416554).

990520670 is a wasteful number, since it uses less digits than its factorization.

990520670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99052074.

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

The square root of 990520670 is about 31472.5383469462. The cubic root of 990520670 is about 996.8301862305.

The spelling of 990520670 in words is "nine hundred ninety million, five hundred twenty thousand, six hundred seventy".