66254016 has 56 divisors (see below), whose sum is σ = 176168304. Its totient is φ = 21975040.

The previous prime is 66253963. The next prime is 66254057. The reversal of 66254016 is 61045266.

66254016 = T₂₈₃ + T₂₈₄ + ... + T₇₄₈.

It is a super-2 number, since 2×66254016² = 8779189272256512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43996 + ... + 45476.

Almost surely, 2^66254016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66254016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88084152).

66254016 is an abundant number, since it is smaller than the sum of its proper divisors (109914288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66254016 is a wasteful number, since it uses less digits than its factorization.

66254016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 66254016 is about 8139.6569952302. The cubic root of 66254016 is about 404.6417927070.

The spelling of 66254016 in words is "sixty-six million, two hundred fifty-four thousand, sixteen".