66151340 has 12 divisors (see below), whose sum is σ = 138917856. Its totient is φ = 26460528.

The previous prime is 66151333. The next prime is 66151357. The reversal of 66151340 is 4315166.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1653764 + ... + 1653803.

It is an arithmetic number, because the mean of its divisors is an integer number (11576488).

Almost surely, 2^66151340 is an apocalyptic number.

It is an amenable number.

66151340 is an abundant number, since it is smaller than the sum of its proper divisors (72766516).

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

66151340 is a wasteful number, since it uses less digits than its factorization.

66151340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307576 (or 3307574 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66151340 is about 8133.3474043594. The cubic root of 66151340 is about 404.4326557925.

The spelling of 66151340 in words is "sixty-six million, one hundred fifty-one thousand, three hundred forty".