8990620975 has 24 divisors (see below), whose sum is σ = 12746157408. Its totient is φ = 6162499200.

The previous prime is 8990620973. The next prime is 8990620993. The reversal of 8990620975 is 5790260998.

It is not a de Polignac number, because 8990620975 - 2¹ = 8990620973 is a prime.

It is a super-2 number, since 2×8990620975² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990620973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491697 + ... + 509653.

It is an arithmetic number, because the mean of its divisors is an integer number (531089892).

Almost surely, 2^8990620975 is an apocalyptic number.

8990620975 is a deficient number, since it is larger than the sum of its proper divisors (3755536433).

8990620975 is a wasteful number, since it uses less digits than its factorization.

8990620975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20835 (or 20830 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 8990620975 is about 94818.8851178920. The cubic root of 8990620975 is about 2079.3610104954.

The spelling of 8990620975 in words is "eight billion, nine hundred ninety million, six hundred twenty thousand, nine hundred seventy-five".