618520970 has 32 divisors (see below), whose sum is σ = 1139898960. Its totient is φ = 241574400.

The previous prime is 618520967. The next prime is 618520993. The reversal of 618520970 is 79025816.

618520970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 556063561 + 62457409 = 23581^2 + 7903^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69536 + ... + 77924.

Almost surely, 2^618520970 is an apocalyptic number.

618520970 is a deficient number, since it is larger than the sum of its proper divisors (521377990).

618520970 is a wasteful number, since it uses less digits than its factorization.

618520970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 618520970 is about 24870.0818253580. The cubic root of 618520970 is about 852.0233091480.

The spelling of 618520970 in words is "six hundred eighteen million, five hundred twenty thousand, nine hundred seventy".