73920577 has 2 divisors, whose sum is σ = 73920578. Its totient is φ = 73920576.

The previous prime is 73920559. The next prime is 73920619. The reversal of 73920577 is 77502937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69956496 + 3964081 = 8364^2 + 1991^2 .

It is an emirp because it is prime and its reverse (77502937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73920577 - 2¹⁵ = 73887809 is a prime.

It is not a weakly prime, because it can be changed into another prime (73920527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36960288 + 36960289.

It is an arithmetic number, because the mean of its divisors is an integer number (36960289).

Almost surely, 2^73920577 is an apocalyptic number.

It is an amenable number.

73920577 is a deficient number, since it is larger than the sum of its proper divisors (1).

73920577 is an equidigital number, since it uses as much as digits as its factorization.

73920577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 73920577 is about 8597.7076596032. The cubic root of 73920577 is about 419.6833913985.

It can be divided in two parts, 739 and 20577, that added together give a square (21316 = 146²).

The spelling of 73920577 in words is "seventy-three million, nine hundred twenty thousand, five hundred seventy-seven".