77320258 has 4 divisors (see below), whose sum is σ = 115980390. Its totient is φ = 38660128.

The previous prime is 77320237. The next prime is 77320277. The reversal of 77320258 is 85202377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 76685049 + 635209 = 8757^2 + 797^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19330063 + ... + 19330066.

Almost surely, 2^77320258 is an apocalyptic number.

77320258 is a deficient number, since it is larger than the sum of its proper divisors (38660132).

77320258 is a wasteful number, since it uses less digits than its factorization.

77320258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38660131.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 77320258 is about 8793.1938452419. The cubic root of 77320258 is about 426.0210889807.

The spelling of 77320258 in words is "seventy-seven million, three hundred twenty thousand, two hundred fifty-eight".