145668274 has 32 divisors (see below), whose sum is σ = 237420720. Its totient is φ = 66772992.

The previous prime is 145668239. The next prime is 145668277. The reversal of 145668274 is 472866541.

145668274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 132089049 + 13579225 = 11493^2 + 3685^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145668274.

It is not an unprimeable number, because it can be changed into a prime (145668277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412482 + ... + 412834.

Almost surely, 2^145668274 is an apocalyptic number.

145668274 is a deficient number, since it is larger than the sum of its proper divisors (91752446).

145668274 is a wasteful number, since it uses less digits than its factorization.

145668274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its digits is 322560, while the sum is 43.

The square root of 145668274 is about 12069.3112479545. The cubic root of 145668274 is about 526.1646392918.

The spelling of 145668274 in words is "one hundred forty-five million, six hundred sixty-eight thousand, two hundred seventy-four".