76616121 has 4 divisors (see below), whose sum is σ = 102154832. Its totient is φ = 51077412.

The previous prime is 76616119. The next prime is 76616123. The reversal of 76616121 is 12161667.

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.

It is an interprime number because it is at equal distance from previous prime (76616119) and next prime (76616123).

It is not a de Polignac number, because 76616121 - 2¹ = 76616119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76616123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12769351 + ... + 12769356.

It is an arithmetic number, because the mean of its divisors is an integer number (25538708).

Almost surely, 2^76616121 is an apocalyptic number.

It is an amenable number.

76616121 is a deficient number, since it is larger than the sum of its proper divisors (25538711).

76616121 is a wasteful number, since it uses less digits than its factorization.

76616121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25538710.

The product of its digits is 3024, while the sum is 30.

The square root of 76616121 is about 8753.0635208480. The cubic root of 76616121 is about 424.7239194278.

Adding to 76616121 its reverse (12161667), we get a palindrome (88777788).

The spelling of 76616121 in words is "seventy-six million, six hundred sixteen thousand, one hundred twenty-one".