76687261 has 8 divisors (see below), whose sum is σ = 89780544. Its totient is φ = 64128480.

The previous prime is 76687253. The next prime is 76687279. The reversal of 76687261 is 16278667.

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 76687261 - 2³ = 76687253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76687201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133315 + ... + 133888.

It is an arithmetic number, because the mean of its divisors is an integer number (11222568).

Almost surely, 2^76687261 is an apocalyptic number.

It is an amenable number.

76687261 is a deficient number, since it is larger than the sum of its proper divisors (13093283).

76687261 is a wasteful number, since it uses less digits than its factorization.

76687261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267251.

The product of its digits is 169344, while the sum is 43.

The square root of 76687261 is about 8757.1262980501. The cubic root of 76687261 is about 424.8553343846.

The spelling of 76687261 in words is "seventy-six million, six hundred eighty-seven thousand, two hundred sixty-one".