258378674 has 4 divisors (see below), whose sum is σ = 387568014. Its totient is φ = 129189336.

The previous prime is 258378671. The next prime is 258378689. The reversal of 258378674 is 476873852.

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., 134212225 + 124166449 = 11585^2 + 11143^2 .

It is not an unprimeable number, because it can be changed into a prime (258378671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64594667 + ... + 64594670.

Almost surely, 2^258378674 is an apocalyptic number.

258378674 is a deficient number, since it is larger than the sum of its proper divisors (129189340).

258378674 is a wasteful number, since it uses less digits than its factorization.

258378674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129189339.

The product of its digits is 2257920, while the sum is 50.

The square root of 258378674 is about 16074.1616888720. The cubic root of 258378674 is about 636.9209805481.

The spelling of 258378674 in words is "two hundred fifty-eight million, three hundred seventy-eight thousand, six hundred seventy-four".