66140462 has 16 divisors (see below), whose sum is σ = 102114432. Its totient is φ = 32110080.

The previous prime is 66140461. The next prime is 66140471. The reversal of 66140462 is 26404166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66140461) 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, 16478 + ... + 20094.

It is an arithmetic number, because the mean of its divisors is an integer number (6382152).

Almost surely, 2^66140462 is an apocalyptic number.

66140462 is a deficient number, since it is larger than the sum of its proper divisors (35973970).

66140462 is a wasteful number, since it uses less digits than its factorization.

66140462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 66140462 is about 8132.6786485143. The cubic root of 66140462 is about 404.4104861252.

The spelling of 66140462 in words is "sixty-six million, one hundred forty thousand, four hundred sixty-two".