66923076 has 24 divisors (see below), whose sum is σ = 170349984. Its totient is φ = 20279680.

The previous prime is 66923071. The next prime is 66923083. The reversal of 66923076 is 67032966.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66923071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253365 + ... + 253628.

It is an arithmetic number, because the mean of its divisors is an integer number (7097916).

Almost surely, 2^66923076 is an apocalyptic number.

66923076 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

66923076 is an abundant number, since it is smaller than the sum of its proper divisors (103426908).

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

66923076 is a wasteful number, since it uses less digits than its factorization.

66923076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507011 (or 507009 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 66923076 is about 8180.6525412097. The cubic root of 66923076 is about 405.9993124468. Note that the first 3 decimals are identical.

The spelling of 66923076 in words is "sixty-six million, nine hundred twenty-three thousand, seventy-six".