76640611 has 4 divisors (see below), whose sum is σ = 76675032. Its totient is φ = 76606192.

The previous prime is 76640581. The next prime is 76640647. The reversal of 76640611 is 11604667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11604667 = 173 ⋅67079.

It is a cyclic number.

It is not a de Polignac number, because 76640611 - 2⁷ = 76640483 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76640411) 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, 13621 + ... + 18406.

It is an arithmetic number, because the mean of its divisors is an integer number (19168758).

Almost surely, 2^76640611 is an apocalyptic number.

76640611 is a deficient number, since it is larger than the sum of its proper divisors (34421).

76640611 is a wasteful number, since it uses less digits than its factorization.

76640611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34420.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 76640611 is about 8754.4623478544. The cubic root of 76640611 is about 424.7691683066.

The spelling of 76640611 in words is "seventy-six million, six hundred forty thousand, six hundred eleven".