798740644 has 27 divisors (see below), whose sum is σ = 1514983617. Its totient is φ = 368310384.

The previous prime is 798740641. The next prime is 798740647. The reversal of 798740644 is 446047897.

The square root of 798740644 is 28262.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (798740641) and next prime (798740647).

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 680583744 = 10870^2 + 26088^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798740641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 734269 + ... + 735355.

Almost surely, 2^798740644 is an apocalyptic number.

798740644 is the 28262-nd square number.

It is an amenable number.

798740644 is a deficient number, since it is larger than the sum of its proper divisors (716242973).

798740644 is a wasteful number, since it uses less digits than its factorization.

798740644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The cubic root of 798740644 is about 927.8303931638.

Multiplying 798740644 by its sum of digits (49), we get a square (39138291556 = 197834²).

The spelling of 798740644 in words is "seven hundred ninety-eight million, seven hundred forty thousand, six hundred forty-four".