66496356 has 48 divisors (see below), whose sum is σ = 173443200. Its totient is φ = 22031136.

The previous prime is 66496351. The next prime is 66496373. The reversal of 66496356 is 65369466.

66496356 is a `hidden beast` number, since 6 + 6 + 4 + 9 + 635 + 6 = 666.

It is a super-2 number, since 2×66496356² = 8843530722557472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66496351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16905 + ... + 20463.

It is an arithmetic number, because the mean of its divisors is an integer number (3613400).

Almost surely, 2^66496356 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 66496356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86721600).

66496356 is an abundant number, since it is smaller than the sum of its proper divisors (106946844).

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

66496356 is a wasteful number, since it uses less digits than its factorization.

66496356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745 (or 3737 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 66496356 is about 8154.5297841139. The cubic root of 66496356 is about 405.1345506302.

It can be divided in two parts, 664 and 96356, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 66496356 in words is "sixty-six million, four hundred ninety-six thousand, three hundred fifty-six".