6620764601 has 4 divisors (see below), whose sum is σ = 7222652304. Its totient is φ = 6018876900.

The previous prime is 6620764561. The next prime is 6620764609. The reversal of 6620764601 is 1064670266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6620764601 - 2⁶ = 6620764537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620764609) 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, 300943835 + ... + 300943856.

It is an arithmetic number, because the mean of its divisors is an integer number (1805663076).

Almost surely, 2^6620764601 is an apocalyptic number.

It is an amenable number.

6620764601 is a deficient number, since it is larger than the sum of its proper divisors (601887703).

6620764601 is a wasteful number, since it uses less digits than its factorization.

6620764601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601887702.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 6620764601 is about 81368.0809715948. The cubic root of 6620764601 is about 1877.7425560930.

The spelling of 6620764601 in words is "six billion, six hundred twenty million, seven hundred sixty-four thousand, six hundred one".