66079955 has 4 divisors (see below), whose sum is σ = 79295952. Its totient is φ = 52863960.

The previous prime is 66079933. The next prime is 66079961. The reversal of 66079955 is 55997066.

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

It is not a de Polignac number, because 66079955 - 2¹² = 66075859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6607991 + ... + 6608000.

It is an arithmetic number, because the mean of its divisors is an integer number (19823988).

Almost surely, 2^66079955 is an apocalyptic number.

66079955 is a deficient number, since it is larger than the sum of its proper divisors (13215997).

66079955 is a wasteful number, since it uses less digits than its factorization.

66079955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13215996.

The product of its (nonzero) digits is 510300, while the sum is 47.

The square root of 66079955 is about 8128.9578052786. The cubic root of 66079955 is about 404.2871267867.

The spelling of 66079955 in words is "sixty-six million, seventy-nine thousand, nine hundred fifty-five".