76765520 has 80 divisors (see below), whose sum is σ = 193654272. Its totient is φ = 28131840.

The previous prime is 76765499. The next prime is 76765537. The reversal of 76765520 is 2556767.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231755 + ... + 232085.

Almost surely, 2^76765520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76765520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96827136).

76765520 is an abundant number, since it is smaller than the sum of its proper divisors (116888752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76765520 is a wasteful number, since it uses less digits than its factorization.

76765520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 76765520 is about 8761.5934623789. The cubic root of 76765520 is about 424.9998062283. Note that the first 3 decimals are identical.

The spelling of 76765520 in words is "seventy-six million, seven hundred sixty-five thousand, five hundred twenty".