76423945 has 16 divisors (see below), whose sum is σ = 99101520. Its totient is φ = 56242944.

The previous prime is 76423931. The next prime is 76423951. The reversal of 76423945 is 54932467.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 28869129 + 47554816 = 5373^2 + 6896^2 .

It is a cyclic number.

It is not a de Polignac number, because 76423945 - 2⁷ = 76423817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76423898 and 76423907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18751 + ... + 22459.

It is an arithmetic number, because the mean of its divisors is an integer number (6193845).

Almost surely, 2^76423945 is an apocalyptic number.

It is an amenable number.

76423945 is a deficient number, since it is larger than the sum of its proper divisors (22677575).

76423945 is a wasteful number, since it uses less digits than its factorization.

76423945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044.

The product of its digits is 181440, while the sum is 40.

The square root of 76423945 is about 8742.0789861451. The cubic root of 76423945 is about 424.3685108358.

The spelling of 76423945 in words is "seventy-six million, four hundred twenty-three thousand, nine hundred forty-five".