145764074 has 4 divisors (see below), whose sum is σ = 218646114. Its totient is φ = 72882036.

The previous prime is 145764049. The next prime is 145764083. The reversal of 145764074 is 470467541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 470467541 = 257 ⋅1830613.

It can be written as a sum of positive squares in only one way, i.e., 140588449 + 5175625 = 11857^2 + 2275^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36441017 + ... + 36441020.

Almost surely, 2^145764074 is an apocalyptic number.

145764074 is a deficient number, since it is larger than the sum of its proper divisors (72882040).

145764074 is an equidigital number, since it uses as much as digits as its factorization.

145764074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72882039.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 145764074 is about 12073.2793391025. The cubic root of 145764074 is about 526.2799595900.

The spelling of 145764074 in words is "one hundred forty-five million, seven hundred sixty-four thousand, seventy-four".