76121870 has 16 divisors (see below), whose sum is σ = 149475888. Its totient is φ = 27680640.

The previous prime is 76121867. The next prime is 76121887. The reversal of 76121870 is 7812167.

It is an alternating number because its digits alternate between odd and even.

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 7 ways as a sum of consecutive naturals, for example, 345899 + ... + 346118.

It is an arithmetic number, because the mean of its divisors is an integer number (9342243).

Almost surely, 2^76121870 is an apocalyptic number.

76121870 is a deficient number, since it is larger than the sum of its proper divisors (73354018).

76121870 is a wasteful number, since it uses less digits than its factorization.

76121870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692035.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 76121870 is about 8724.7848110999. The cubic root of 76121870 is about 423.8086497137.

The spelling of 76121870 in words is "seventy-six million, one hundred twenty-one thousand, eight hundred seventy".