7607220561 has 12 divisors (see below), whose sum is σ = 11043427200. Its totient is φ = 5045994360.

The previous prime is 7607220557. The next prime is 7607220563. The reversal of 7607220561 is 1650227067.

7607220561 is a `hidden beast` number, since 7 + 6 + 0 + 72 + 20 + 561 = 666.

It is not a de Polignac number, because 7607220561 - 2² = 7607220557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7607220563) 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, 2121945 + ... + 2125526.

It is an arithmetic number, because the mean of its divisors is an integer number (920285600).

Almost surely, 2^7607220561 is an apocalyptic number.

It is an amenable number.

7607220561 is a deficient number, since it is larger than the sum of its proper divisors (3436206639).

7607220561 is a wasteful number, since it uses less digits than its factorization.

7607220561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247676 (or 4247673 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 7607220561 is about 87219.3817967085. The cubic root of 7607220561 is about 1966.7175930730.

The spelling of 7607220561 in words is "seven billion, six hundred seven million, two hundred twenty thousand, five hundred sixty-one".