76821085 has 48 divisors (see below), whose sum is σ = 109932480. Its totient is φ = 51321600.

The previous prime is 76821083. The next prime is 76821097. The reversal of 76821085 is 58012867.

It is not a de Polignac number, because 76821085 - 2¹ = 76821083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76821083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 471214 + ... + 471376.

It is an arithmetic number, because the mean of its divisors is an integer number (2290260).

Almost surely, 2^76821085 is an apocalyptic number.

It is an amenable number.

76821085 is a deficient number, since it is larger than the sum of its proper divisors (33111395).

76821085 is a wasteful number, since it uses less digits than its factorization.

76821085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 76821085 is about 8764.7638302467. The cubic root of 76821085 is about 425.1023236900.

The spelling of 76821085 in words is "seventy-six million, eight hundred twenty-one thousand, eighty-five".