66271672 has 16 divisors (see below), whose sum is σ = 124392240. Its totient is φ = 33100416.

The previous prime is 66271657. The next prime is 66271687. The reversal of 66271672 is 27617266.

It is an interprime number because it is at equal distance from previous prime (66271657) and next prime (66271687).

It is a congruent number.

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, 4608 + ... + 12400.

It is an arithmetic number, because the mean of its divisors is an integer number (7774515).

Almost surely, 2^66271672 is an apocalyptic number.

It is an amenable number.

66271672 is a deficient number, since it is larger than the sum of its proper divisors (58120568).

66271672 is a wasteful number, since it uses less digits than its factorization.

66271672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8862 (or 8858 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 66271672 is about 8140.7414895696. The cubic root of 66271672 is about 404.6777337784.

The spelling of 66271672 in words is "sixty-six million, two hundred seventy-one thousand, six hundred seventy-two".