7496898721 has 16 divisors (see below), whose sum is σ = 8388550800. Its totient is φ = 6652332288.

The previous prime is 7496898709. The next prime is 7496898797. The reversal of 7496898721 is 1278986947.

It can be written as a sum of positive squares in 8 ways, for example, as 377758096 + 7119140625 = 19436^2 + 84375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7496898721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7496898721.

It is not an unprimeable number, because it can be changed into a prime (7496898121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42915 + ... + 129751.

It is an arithmetic number, because the mean of its divisors is an integer number (524284425).

Almost surely, 2^7496898721 is an apocalyptic number.

It is an amenable number.

7496898721 is a deficient number, since it is larger than the sum of its proper divisors (891652079).

7496898721 is a wasteful number, since it uses less digits than its factorization.

7496898721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87108.

The product of its digits is 12192768, while the sum is 61.

The square root of 7496898721 is about 86584.6332844345. The cubic root of 7496898721 is about 1957.1639812366.

The spelling of 7496898721 in words is "seven billion, four hundred ninety-six million, eight hundred ninety-eight thousand, seven hundred twenty-one".