720534979 has 2 divisors, whose sum is σ = 720534980. Its totient is φ = 720534978.

The previous prime is 720534973. The next prime is 720535087. The reversal of 720534979 is 979435027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720534979 - 2¹³ = 720526787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720534973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360267489 + 360267490.

It is an arithmetic number, because the mean of its divisors is an integer number (360267490).

Almost surely, 2^720534979 is an apocalyptic number.

720534979 is a deficient number, since it is larger than the sum of its proper divisors (1).

720534979 is an equidigital number, since it uses as much as digits as its factorization.

720534979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 720534979 is about 26842.7826240127. The cubic root of 720534979 is about 896.5028811525.

The spelling of 720534979 in words is "seven hundred twenty million, five hundred thirty-four thousand, nine hundred seventy-nine".