7644004901 has 4 divisors (see below), whose sum is σ = 8232005292. Its totient is φ = 7056004512.

The previous prime is 7644004889. The next prime is 7644004909. The reversal of 7644004901 is 1094004467.

It is a Cunningham number, because it is equal to 87430²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1094004467 = 1093 ⋅1000919.

It can be written as a sum of positive squares in 2 ways, for example, as 1130707876 + 6513297025 = 33626^2 + 80705^2 .

It is a cyclic number.

It is not a de Polignac number, because 7644004901 - 2²² = 7639810597 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 (7644004909) 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, 294000176 + ... + 294000201.

It is an arithmetic number, because the mean of its divisors is an integer number (2058001323).

Almost surely, 2^7644004901 is an apocalyptic number.

It is an amenable number.

7644004901 is a deficient number, since it is larger than the sum of its proper divisors (588000391).

7644004901 is a wasteful number, since it uses less digits than its factorization.

7644004901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588000390.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 7644004901 is about 87430.0000057189. Note that the first 5 decimals coincide. The cubic root of 7644004901 is about 1969.8824859686.

The spelling of 7644004901 in words is "seven billion, six hundred forty-four million, four thousand, nine hundred one".