719796991 has 4 divisors (see below), whose sum is σ = 731997000. Its totient is φ = 707596984.

The previous prime is 719796977. The next prime is 719797019. The reversal of 719796991 is 199697917.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-719796991 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719796901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6099916 + ... + 6100033.

It is an arithmetic number, because the mean of its divisors is an integer number (182999250).

Almost surely, 2^719796991 is an apocalyptic number.

719796991 is a deficient number, since it is larger than the sum of its proper divisors (12200009).

719796991 is a wasteful number, since it uses less digits than its factorization.

719796991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12200008.

The product of its digits is 1928934, while the sum is 58.

The square root of 719796991 is about 26829.0326139427. The cubic root of 719796991 is about 896.1967038471.

The spelling of 719796991 in words is "seven hundred nineteen million, seven hundred ninety-six thousand, nine hundred ninety-one".