66148856 has 8 divisors (see below), whose sum is σ = 124029120. Its totient is φ = 33074424.

The previous prime is 66148847. The next prime is 66148871. The reversal of 66148856 is 65884166.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4134296 + ... + 4134311.

It is an arithmetic number, because the mean of its divisors is an integer number (15503640).

Almost surely, 2^66148856 is an apocalyptic number.

It is an amenable number.

66148856 is a deficient number, since it is larger than the sum of its proper divisors (57880264).

66148856 is a wasteful number, since it uses less digits than its factorization.

66148856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268613 (or 8268609 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 66148856 is about 8133.1946982720. The cubic root of 66148856 is about 404.4275935454.

The spelling of 66148856 in words is "sixty-six million, one hundred forty-eight thousand, eight hundred fifty-six".