76687481 has 8 divisors (see below), whose sum is σ = 82677504. Its totient is φ = 70710480.

The previous prime is 76687427. The next prime is 76687489. The reversal of 76687481 is 18478667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76687481 - 2⁶ = 76687417 is a prime.

It is a super-2 number, since 2×76687481² = 11761939484250722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76687489) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11480 + ... + 16886.

It is an arithmetic number, because the mean of its divisors is an integer number (10334688).

Almost surely, 2^76687481 is an apocalyptic number.

It is an amenable number.

76687481 is a deficient number, since it is larger than the sum of its proper divisors (5990023).

76687481 is a wasteful number, since it uses less digits than its factorization.

76687481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6511.

The product of its digits is 451584, while the sum is 47.

The square root of 76687481 is about 8757.1388592394. The cubic root of 76687481 is about 424.8557406584.

The spelling of 76687481 in words is "seventy-six million, six hundred eighty-seven thousand, four hundred eighty-one".