66054499 has 6 divisors (see below), whose sum is σ = 76838964. Its totient is φ = 56618100.

The previous prime is 66054491. The next prime is 66054533. The reversal of 66054499 is 99445066.

It is a happy number.

It is not a de Polignac number, because 66054499 - 2³ = 66054491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66054491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673977 + ... + 674074.

It is an arithmetic number, because the mean of its divisors is an integer number (12806494).

Almost surely, 2^66054499 is an apocalyptic number.

66054499 is a deficient number, since it is larger than the sum of its proper divisors (10784465).

66054499 is a wasteful number, since it uses less digits than its factorization.

66054499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348065 (or 1348058 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 66054499 is about 8127.3918940826. The cubic root of 66054499 is about 404.2352055704.

The spelling of 66054499 in words is "sixty-six million, fifty-four thousand, four hundred ninety-nine".