76861401 has 8 divisors (see below), whose sum is σ = 102523200. Its totient is φ = 51220272.

The previous prime is 76861399. The next prime is 76861409. The reversal of 76861401 is 10416867.

It is a happy number.

76861401 is a nontrivial binomial coefficient, being equal to C(12399, 2).

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

It is not a de Polignac number, because 76861401 - 2¹ = 76861399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76861409) 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, 9300 + ... + 15498.

It is an arithmetic number, because the mean of its divisors is an integer number (12815400).

Almost surely, 2^76861401 is an apocalyptic number.

76861401 is the 12398-th triangular number.

It is an amenable number.

76861401 is a deficient number, since it is larger than the sum of its proper divisors (25661799).

76861401 is a wasteful number, since it uses less digits than its factorization.

76861401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10335.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 76861401 is about 8767.0634194125. The cubic root of 76861401 is about 425.1766757946.

The spelling of 76861401 in words is "seventy-six million, eight hundred sixty-one thousand, four hundred one".