721790059 has 2 divisors, whose sum is σ = 721790060. Its totient is φ = 721790058.

The previous prime is 721790051. The next prime is 721790119. The reversal of 721790059 is 950097127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 721790059 - 2³ = 721790051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (721790051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360895029 + 360895030.

It is an arithmetic number, because the mean of its divisors is an integer number (360895030).

Almost surely, 2^721790059 is an apocalyptic number.

721790059 is a deficient number, since it is larger than the sum of its proper divisors (1).

721790059 is an equidigital number, since it uses as much as digits as its factorization.

721790059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 721790059 is about 26866.1508035669. The cubic root of 721790059 is about 897.0231104229.

The spelling of 721790059 in words is "seven hundred twenty-one million, seven hundred ninety thousand, fifty-nine".