719377961 has 2 divisors, whose sum is σ = 719377962. Its totient is φ = 719377960.

The previous prime is 719377937. The next prime is 719377963. The reversal of 719377961 is 169773917.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522396736 + 196981225 = 22856^2 + 14035^2 .

It is a cyclic number.

It is not a de Polignac number, because 719377961 - 2²⁶ = 652269097 is a prime.

Together with 719377963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (719377963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359688980 + 359688981.

It is an arithmetic number, because the mean of its divisors is an integer number (359688981).

Almost surely, 2^719377961 is an apocalyptic number.

It is an amenable number.

719377961 is a deficient number, since it is larger than the sum of its proper divisors (1).

719377961 is an equidigital number, since it uses as much as digits as its factorization.

719377961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 50.

The square root of 719377961 is about 26821.2222130163. Note that the first 4 decimals coincide. The cubic root of 719377961 is about 896.0227630437.

The spelling of 719377961 in words is "seven hundred nineteen million, three hundred seventy-seven thousand, nine hundred sixty-one".