8372662521 has 8 divisors (see below), whose sum is σ = 11435831904. Its totient is φ = 5445634080.

The previous prime is 8372662517. The next prime is 8372662547. The reversal of 8372662521 is 1252662738.

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

It is not a de Polignac number, because 8372662521 - 2² = 8372662517 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (8372662021) 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, 34035091 + ... + 34035336.

It is an arithmetic number, because the mean of its divisors is an integer number (1429478988).

Almost surely, 2^8372662521 is an apocalyptic number.

It is an amenable number.

8372662521 is a deficient number, since it is larger than the sum of its proper divisors (3063169383).

8372662521 is a wasteful number, since it uses less digits than its factorization.

8372662521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68070471.

The product of its digits is 241920, while the sum is 42.

The square root of 8372662521 is about 91502.2541853478. The cubic root of 8372662521 is about 2030.5851016303.

The spelling of 8372662521 in words is "eight billion, three hundred seventy-two million, six hundred sixty-two thousand, five hundred twenty-one".