6420293761 has 24 divisors (see below), whose sum is σ = 7869294720. Its totient is φ = 5121401472.

The previous prime is 6420293699. The next prime is 6420293773. The reversal of 6420293761 is 1673920246.

It is a happy number.

It is not a de Polignac number, because 6420293761 - 2²³ = 6411905153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6420290761) 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, 205845 + ... + 234973.

It is an arithmetic number, because the mean of its divisors is an integer number (327887280).

Almost surely, 2^6420293761 is an apocalyptic number.

It is an amenable number.

6420293761 is a deficient number, since it is larger than the sum of its proper divisors (1449000959).

6420293761 is a wasteful number, since it uses less digits than its factorization.

6420293761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29233 (or 29196 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 6420293761 is about 80126.7356192676. The cubic root of 6420293761 is about 1858.5958648655.

The spelling of 6420293761 in words is "six billion, four hundred twenty million, two hundred ninety-three thousand, seven hundred sixty-one".