66154742 has 24 divisors (see below), whose sum is σ = 105648816. Its totient is φ = 31044384.

The previous prime is 66154733. The next prime is 66154813. The reversal of 66154742 is 24745166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61703 + ... + 62765.

It is an arithmetic number, because the mean of its divisors is an integer number (4402034).

Almost surely, 2^66154742 is an apocalyptic number.

66154742 is a deficient number, since it is larger than the sum of its proper divisors (39494074).

66154742 is a wasteful number, since it uses less digits than its factorization.

66154742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1131 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 66154742 is about 8133.5565406530. The cubic root of 66154742 is about 404.4395886644.

The spelling of 66154742 in words is "sixty-six million, one hundred fifty-four thousand, seven hundred forty-two".