8997610621 has 8 divisors (see below), whose sum is σ = 9528767424. Its totient is φ = 8466663360.

The previous prime is 8997610571. The next prime is 8997610627. The reversal of 8997610621 is 1260167998.

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

It is a cyclic number.

It is not a de Polignac number, because 8997610621 - 2²¹ = 8995513469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997610627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40776 + ... + 140206.

It is an arithmetic number, because the mean of its divisors is an integer number (1191095928).

Almost surely, 2^8997610621 is an apocalyptic number.

It is an amenable number.

8997610621 is a deficient number, since it is larger than the sum of its proper divisors (531156803).

8997610621 is a wasteful number, since it uses less digits than its factorization.

8997610621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104771.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 8997610621 is about 94855.7358360579. The cubic root of 8997610621 is about 2079.8997286629.

The spelling of 8997610621 in words is "eight billion, nine hundred ninety-seven million, six hundred ten thousand, six hundred twenty-one".