76036661 has 4 divisors (see below), whose sum is σ = 76747392. Its totient is φ = 75325932.

The previous prime is 76036621. The next prime is 76036687. The reversal of 76036661 is 16663067.

It is a happy number.

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: 16663067 = 491 ⋅33937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76036661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76036621) 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, 355205 + ... + 355418.

It is an arithmetic number, because the mean of its divisors is an integer number (19186848).

Almost surely, 2^76036661 is an apocalyptic number.

It is an amenable number.

76036661 is a deficient number, since it is larger than the sum of its proper divisors (710731).

76036661 is a wasteful number, since it uses less digits than its factorization.

76036661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710730.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 76036661 is about 8719.9002861271. The cubic root of 76036661 is about 423.6504569191.

The spelling of 76036661 in words is "seventy-six million, thirty-six thousand, six hundred sixty-one".