76611961 has 4 divisors (see below), whose sum is σ = 76647424. Its totient is φ = 76576500.

The previous prime is 76611959. The next prime is 76611973. The reversal of 76611961 is 16911667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16911667 = 293 ⋅57719.

It is a cyclic number.

It is not a de Polignac number, because 76611961 - 2¹ = 76611959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76611961.

It is not an unprimeable number, because it can be changed into a prime (76611361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14265 + ... + 18886.

It is an arithmetic number, because the mean of its divisors is an integer number (19161856).

Almost surely, 2^76611961 is an apocalyptic number.

It is an amenable number.

76611961 is a deficient number, since it is larger than the sum of its proper divisors (35463).

76611961 is a wasteful number, since it uses less digits than its factorization.

76611961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35462.

The product of its digits is 13608, while the sum is 37.

The square root of 76611961 is about 8752.8258865352. The cubic root of 76611961 is about 424.7162322576.

The spelling of 76611961 in words is "seventy-six million, six hundred eleven thousand, nine hundred sixty-one".