76145945 has 4 divisors (see below), whose sum is σ = 91375140. Its totient is φ = 60916752.

The previous prime is 76145933. The next prime is 76145947. The reversal of 76145945 is 54954167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54954167 = 2389 ⋅23003.

It can be written as a sum of positive squares in 2 ways, for example, as 21799561 + 54346384 = 4669^2 + 7372^2 .

It is a cyclic number.

It is not a de Polignac number, because 76145945 - 2⁴ = 76145929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76145947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7614590 + ... + 7614599.

It is an arithmetic number, because the mean of its divisors is an integer number (22843785).

Almost surely, 2^76145945 is an apocalyptic number.

It is an amenable number.

76145945 is a deficient number, since it is larger than the sum of its proper divisors (15229195).

76145945 is a wasteful number, since it uses less digits than its factorization.

76145945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15229194.

The product of its digits is 151200, while the sum is 41.

The square root of 76145945 is about 8726.1643922172. The cubic root of 76145945 is about 423.8533242065.

The spelling of 76145945 in words is "seventy-six million, one hundred forty-five thousand, nine hundred forty-five".