7620641 has 12 divisors (see below), whose sum is σ = 9254208. Its totient is φ = 6146112.

The previous prime is 7620619. The next prime is 7620671. The reversal of 7620641 is 1460267.

It is not a de Polignac number, because 7620641 - 2¹⁰ = 7619617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7620641.

It is not an unprimeable number, because it can be changed into a prime (7620671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140 + ... + 3906.

It is an arithmetic number, because the mean of its divisors is an integer number (771184).

Almost surely, 2^7620641 is an apocalyptic number.

It is an amenable number.

7620641 is a deficient number, since it is larger than the sum of its proper divisors (1633567).

7620641 is a wasteful number, since it uses less digits than its factorization.

7620641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808 (or 3791 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 7620641 is about 2760.5508508267. The cubic root of 7620641 is about 196.7873455768.

The spelling of 7620641 in words is "seven million, six hundred twenty thousand, six hundred forty-one".