66792487 has 2 divisors, whose sum is σ = 66792488. Its totient is φ = 66792486.

The previous prime is 66792461. The next prime is 66792493. The reversal of 66792487 is 78429766.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66792487 is a prime.

It is a super-2 number, since 2×66792487² = 8922472639290338, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66792487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66792497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33396243 + 33396244.

It is an arithmetic number, because the mean of its divisors is an integer number (33396244).

Almost surely, 2^66792487 is an apocalyptic number.

66792487 is a deficient number, since it is larger than the sum of its proper divisors (1).

66792487 is an equidigital number, since it uses as much as digits as its factorization.

66792487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 66792487 is about 8172.6670677325. The cubic root of 66792487 is about 405.7350609573.

The spelling of 66792487 in words is "sixty-six million, seven hundred ninety-two thousand, four hundred eighty-seven".