7720494636 has 24 divisors (see below), whose sum is σ = 18017334720. Its totient is φ = 2573091472.

The previous prime is 7720494601. The next prime is 7720494667. The reversal of 7720494636 is 6364940277.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33895 + ... + 128801.

It is an arithmetic number, because the mean of its divisors is an integer number (750722280).

Almost surely, 2^7720494636 is an apocalyptic number.

It is an amenable number.

7720494636 is an abundant number, since it is smaller than the sum of its proper divisors (10296840084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7720494636 is a wasteful number, since it uses less digits than its factorization.

7720494636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101693 (or 101691 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 48.

The square root of 7720494636 is about 87866.3452978443. The cubic root of 7720494636 is about 1976.4312339789.

The spelling of 7720494636 in words is "seven billion, seven hundred twenty million, four hundred ninety-four thousand, six hundred thirty-six".