719961973 has 2 divisors, whose sum is σ = 719961974. Its totient is φ = 719961972.

The previous prime is 719961961. The next prime is 719962039. The reversal of 719961973 is 379169917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 465782724 + 254179249 = 21582^2 + 15943^2 .

It is a cyclic number.

It is not a de Polignac number, because 719961973 - 2¹⁷ = 719830901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 719961973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (719931973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359980986 + 359980987.

It is an arithmetic number, because the mean of its divisors is an integer number (359980987).

Almost surely, 2^719961973 is an apocalyptic number.

It is an amenable number.

719961973 is a deficient number, since it is larger than the sum of its proper divisors (1).

719961973 is an equidigital number, since it uses as much as digits as its factorization.

719961973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 52.

The square root of 719961973 is about 26832.1071293329. The cubic root of 719961973 is about 896.2651699245.

The spelling of 719961973 in words is "seven hundred nineteen million, nine hundred sixty-one thousand, nine hundred seventy-three".