76498661 has 4 divisors (see below), whose sum is σ = 78364524. Its totient is φ = 74632800.

The previous prime is 76498649. The next prime is 76498699. The reversal of 76498661 is 16689467.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31528225 + 44970436 = 5615^2 + 6706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76498661 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 (76498061) 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, 932870 + ... + 932951.

It is an arithmetic number, because the mean of its divisors is an integer number (19591131).

Almost surely, 2^76498661 is an apocalyptic number.

It is an amenable number.

76498661 is a deficient number, since it is larger than the sum of its proper divisors (1865863).

76498661 is a wasteful number, since it uses less digits than its factorization.

76498661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865862.

The product of its digits is 435456, while the sum is 47.

The square root of 76498661 is about 8746.3512963978. The cubic root of 76498661 is about 424.5067606580.

The spelling of 76498661 in words is "seventy-six million, four hundred ninety-eight thousand, six hundred sixty-one".