748721651 has 2 divisors, whose sum is σ = 748721652. Its totient is φ = 748721650.

The previous prime is 748721647. The next prime is 748721711. The reversal of 748721651 is 156127847.

748721651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 748721651 - 2² = 748721647 is a prime.

It is a super-2 number, since 2×748721651² = 1121168221352331602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 748721599 and 748721608.

It is not a weakly prime, because it can be changed into another prime (748721251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374360825 + 374360826.

It is an arithmetic number, because the mean of its divisors is an integer number (374360826).

Almost surely, 2^748721651 is an apocalyptic number.

748721651 is a deficient number, since it is larger than the sum of its proper divisors (1).

748721651 is an equidigital number, since it uses as much as digits as its factorization.

748721651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 41.

The square root of 748721651 is about 27362.7785687053. The cubic root of 748721651 is about 908.0437996784.

The spelling of 748721651 in words is "seven hundred forty-eight million, seven hundred twenty-one thousand, six hundred fifty-one".