7742621065 has 16 divisors (see below), whose sum is σ = 9555530688. Its totient is φ = 6019304256.

The previous prime is 7742621041. The next prime is 7742621069. The reversal of 7742621065 is 5601262477.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7742621065 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7742621069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49047 + ... + 133756.

It is an arithmetic number, because the mean of its divisors is an integer number (597220668).

Almost surely, 2^7742621065 is an apocalyptic number.

It is an amenable number.

7742621065 is a deficient number, since it is larger than the sum of its proper divisors (1812909623).

7742621065 is a wasteful number, since it uses less digits than its factorization.

7742621065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183048.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 7742621065 is about 87992.1647932360. The cubic root of 7742621065 is about 1978.3175403513.

The spelling of 7742621065 in words is "seven billion, seven hundred forty-two million, six hundred twenty-one thousand, sixty-five".