66896632 has 64 divisors (see below), whose sum is σ = 146694240. Its totient is φ = 28262400.

The previous prime is 66896623. The next prime is 66896639. The reversal of 66896632 is 23669866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66896639) 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, 144882 + ... + 145342.

Almost surely, 2^66896632 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 66896632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73347120).

66896632 is an abundant number, since it is smaller than the sum of its proper divisors (79797608).

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

66896632 is a wasteful number, since it uses less digits than its factorization.

66896632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592 (or 588 counting only the distinct ones).

The product of its digits is 559872, while the sum is 46.

The square root of 66896632 is about 8179.0361290313. The cubic root of 66896632 is about 405.9458298471.

It can be divided in two parts, 66896 and 632, that added together give a triangular number (67528 = T₃₆₇).

The spelling of 66896632 in words is "sixty-six million, eight hundred ninety-six thousand, six hundred thirty-two".