66796501 has 4 divisors (see below), whose sum is σ = 68349952. Its totient is φ = 65243052.

The previous prime is 66796487. The next prime is 66796517. The reversal of 66796501 is 10569766.

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.

It is a cyclic number.

It is not a de Polignac number, because 66796501 - 2¹⁷ = 66665429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66793501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776661 + ... + 776746.

It is an arithmetic number, because the mean of its divisors is an integer number (17087488).

Almost surely, 2^66796501 is an apocalyptic number.

It is an amenable number.

66796501 is a deficient number, since it is larger than the sum of its proper divisors (1553451).

66796501 is a wasteful number, since it uses less digits than its factorization.

66796501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553450.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 66796501 is about 8172.9126387109. The cubic root of 66796501 is about 405.7431885576.

The spelling of 66796501 in words is "sixty-six million, seven hundred ninety-six thousand, five hundred one".