76687121 has 8 divisors (see below), whose sum is σ = 88201920. Its totient is φ = 65312208.

The previous prime is 76687031. The next prime is 76687141. The reversal of 76687121 is 12178667.

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 76687121 - 2¹⁰ = 76686097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76687141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33791 + ... + 35988.

It is an arithmetic number, because the mean of its divisors is an integer number (11025240).

Almost surely, 2^76687121 is an apocalyptic number.

It is an amenable number.

76687121 is a deficient number, since it is larger than the sum of its proper divisors (11514799).

76687121 is a wasteful number, since it uses less digits than its factorization.

76687121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69943.

The product of its digits is 28224, while the sum is 38.

The square root of 76687121 is about 8757.1183045566. The cubic root of 76687121 is about 424.8550758463.

The spelling of 76687121 in words is "seventy-six million, six hundred eighty-seven thousand, one hundred twenty-one".