74649577 has 2 divisors, whose sum is σ = 74649578. Its totient is φ = 74649576.

The previous prime is 74649571. The next prime is 74649587. The reversal of 74649577 is 77594647.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 28259856 = 6811^2 + 5316^2 .

It is a cyclic number.

It is not a de Polignac number, because 74649577 - 2³ = 74649569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74649577.

It is not a weakly prime, because it can be changed into another prime (74649571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37324788 + 37324789.

It is an arithmetic number, because the mean of its divisors is an integer number (37324789).

Almost surely, 2^74649577 is an apocalyptic number.

It is an amenable number.

74649577 is a deficient number, since it is larger than the sum of its proper divisors (1).

74649577 is an equidigital number, since it uses as much as digits as its factorization.

74649577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 49.

The square root of 74649577 is about 8639.9986689814. The cubic root of 74649577 is about 421.0585110591.

The spelling of 74649577 in words is "seventy-four million, six hundred forty-nine thousand, five hundred seventy-seven".