74945905 has 12 divisors (see below), whose sum is σ = 92439900. Its totient is φ = 58330944.

The previous prime is 74945873. The next prime is 74945977. The reversal of 74945905 is 50954947.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 848241 + 74097664 = 921^2 + 8608^2 .

It is not a de Polignac number, because 74945905 - 2⁵ = 74945873 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1371 + ... + 12319.

It is an arithmetic number, because the mean of its divisors is an integer number (7703325).

Almost surely, 2^74945905 is an apocalyptic number.

It is an amenable number.

74945905 is a deficient number, since it is larger than the sum of its proper divisors (17493995).

74945905 is a wasteful number, since it uses less digits than its factorization.

74945905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11028 (or 10991 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 74945905 is about 8657.1302981993. The cubic root of 74945905 is about 421.6149182869.

The spelling of 74945905 in words is "seventy-four million, nine hundred forty-five thousand, nine hundred five".