7690945621 has 8 divisors (see below), whose sum is σ = 7734693888. Its totient is φ = 7647234000.

The previous prime is 7690945607. The next prime is 7690945637. The reversal of 7690945621 is 1265490967.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7690945621 - 2⁹ = 7690945109 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 (7690945421) 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, 487111 + ... + 502651.

It is an arithmetic number, because the mean of its divisors is an integer number (966836736).

Almost surely, 2^7690945621 is an apocalyptic number.

It is an amenable number.

7690945621 is a deficient number, since it is larger than the sum of its proper divisors (43748267).

7690945621 is a wasteful number, since it uses less digits than its factorization.

7690945621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18323.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 7690945621 is about 87698.0365857754. The cubic root of 7690945621 is about 1973.9065139318.

The spelling of 7690945621 in words is "seven billion, six hundred ninety million, nine hundred forty-five thousand, six hundred twenty-one".