66254954 has 4 divisors (see below), whose sum is σ = 99382434. Its totient is φ = 33127476.

The previous prime is 66254939. The next prime is 66254963. The reversal of 66254954 is 45945266.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 66178225 + 76729 = 8135^2 + 277^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16563737 + ... + 16563740.

Almost surely, 2^66254954 is an apocalyptic number.

66254954 is a deficient number, since it is larger than the sum of its proper divisors (33127480).

66254954 is a wasteful number, since it uses less digits than its factorization.

66254954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33127479.

The product of its digits is 259200, while the sum is 41.

The square root of 66254954 is about 8139.7146141619. The cubic root of 66254954 is about 404.6437022879.

The spelling of 66254954 in words is "sixty-six million, two hundred fifty-four thousand, nine hundred fifty-four".