7420661536 has 12 divisors (see below), whose sum is σ = 14609427462. Its totient is φ = 3710330752.

The previous prime is 7420661519. The next prime is 7420661537. The reversal of 7420661536 is 6351660247.

It can be written as a sum of positive squares in only one way, i.e., 4618017936 + 2802643600 = 67956^2 + 52940^2 .

It is not an unprimeable number, because it can be changed into a prime (7420661537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115947805 + ... + 115947868.

Almost surely, 2^7420661536 is an apocalyptic number.

It is an amenable number.

7420661536 is a deficient number, since it is larger than the sum of its proper divisors (7188765926).

7420661536 is a wasteful number, since it uses less digits than its factorization.

7420661536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231895683 (or 231895675 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 7420661536 is about 86143.2616981735. The cubic root of 7420661536 is about 1950.5071252588.

The spelling of 7420661536 in words is "seven billion, four hundred twenty million, six hundred sixty-one thousand, five hundred thirty-six".