76820516 has 6 divisors (see below), whose sum is σ = 134435910. Its totient is φ = 38410256.

The previous prime is 76820453. The next prime is 76820519. The reversal of 76820516 is 61502867.

It can be written as a sum of positive squares in only one way, i.e., 75759616 + 1060900 = 8704^2 + 1030^2 .

It is not an unprimeable number, because it can be changed into a prime (76820519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9602561 + ... + 9602568.

It is an arithmetic number, because the mean of its divisors is an integer number (22405985).

Almost surely, 2^76820516 is an apocalyptic number.

It is an amenable number.

76820516 is a deficient number, since it is larger than the sum of its proper divisors (57615394).

76820516 is a wasteful number, since it uses less digits than its factorization.

76820516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19205133 (or 19205131 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 76820516 is about 8764.7313706696. The cubic root of 76820516 is about 425.1012741352.

The spelling of 76820516 in words is "seventy-six million, eight hundred twenty thousand, five hundred sixteen".