719933661 has 12 divisors (see below), whose sum is σ = 1042452060. Its totient is φ = 478779840.

The previous prime is 719933653. The next prime is 719933689. The reversal of 719933661 is 166339917.

It can be written as a sum of positive squares in 2 ways, for example, as 638825625 + 81108036 = 25275^2 + 9006^2 .

It is not a de Polignac number, because 719933661 - 2³ = 719933653 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719933261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94110 + ... + 101471.

It is an arithmetic number, because the mean of its divisors is an integer number (86871005).

Almost surely, 2^719933661 is an apocalyptic number.

It is an amenable number.

719933661 is a deficient number, since it is larger than the sum of its proper divisors (322518399).

719933661 is a wasteful number, since it uses less digits than its factorization.

719933661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195996 (or 195993 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 719933661 is about 26831.5795472425. The cubic root of 719933661 is about 896.2534214373.

The spelling of 719933661 in words is "seven hundred nineteen million, nine hundred thirty-three thousand, six hundred sixty-one".