66739662 has 24 divisors (see below), whose sum is σ = 157748760. Its totient is φ = 20224080.

The previous prime is 66739661. The next prime is 66739681. The reversal of 66739662 is 26693766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66739661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168337 + ... + 168732.

It is an arithmetic number, because the mean of its divisors is an integer number (6572865).

Almost surely, 2^66739662 is an apocalyptic number.

66739662 is an abundant number, since it is smaller than the sum of its proper divisors (91009098).

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

66739662 is a wasteful number, since it uses less digits than its factorization.

66739662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337088 (or 337085 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 66739662 is about 8169.4346193601. The cubic root of 66739662 is about 405.6280698452.

The spelling of 66739662 in words is "sixty-six million, seven hundred thirty-nine thousand, six hundred sixty-two".