76420537 has 4 divisors (see below), whose sum is σ = 76480756. Its totient is φ = 76360320.

The previous prime is 76420529. The next prime is 76420573. The reversal of 76420537 is 73502467.

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: 73502467 = 53 ⋅1386839.

It can be written as a sum of positive squares in 2 ways, for example, as 55890576 + 20529961 = 7476^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 76420537 - 2³ = 76420529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76420837) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 28164 + ... + 30757.

It is an arithmetic number, because the mean of its divisors is an integer number (19120189).

Almost surely, 2^76420537 is an apocalyptic number.

It is an amenable number.

76420537 is a deficient number, since it is larger than the sum of its proper divisors (60219).

76420537 is a wasteful number, since it uses less digits than its factorization.

76420537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60218.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 76420537 is about 8741.8840646625. The cubic root of 76420537 is about 424.3622027370.

The spelling of 76420537 in words is "seventy-six million, four hundred twenty thousand, five hundred thirty-seven".