66277494 has 32 divisors (see below), whose sum is σ = 148118880. Its totient is φ = 21967200.

The previous prime is 66277493. The next prime is 66277517. The reversal of 66277494 is 49477266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277493) 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, 6384 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (4628715).

Almost surely, 2^66277494 is an apocalyptic number.

66277494 is an abundant number, since it is smaller than the sum of its proper divisors (81841386).

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

66277494 is a wasteful number, since it uses less digits than its factorization.

66277494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973 (or 6967 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 66277494 is about 8141.0990658510. The cubic root of 66277494 is about 404.6895838128.

The spelling of 66277494 in words is "sixty-six million, two hundred seventy-seven thousand, four hundred ninety-four".