76666653 has 36 divisors (see below), whose sum is σ = 133612128. Its totient is φ = 41491440.

The previous prime is 76666649. The next prime is 76666657. The reversal of 76666653 is 35666667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (76666649) and next prime (76666657).

It is not a de Polignac number, because 76666653 - 2² = 76666649 is a prime.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 76666599 and 76666608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76666657) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21058 + ... + 24428.

It is an arithmetic number, because the mean of its divisors is an integer number (3711448).

Almost surely, 2^76666653 is an apocalyptic number.

It is an amenable number.

76666653 is a deficient number, since it is larger than the sum of its proper divisors (56945475).

76666653 is a wasteful number, since it uses less digits than its factorization.

76666653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422 (or 3400 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 76666653 is about 8755.9495772874. The cubic root of 76666653 is about 424.8172741600.

The spelling of 76666653 in words is "seventy-six million, six hundred sixty-six thousand, six hundred fifty-three".