66121466 has 24 divisors (see below), whose sum is σ = 106246560. Its totient is φ = 30854592.

The previous prime is 66121457. The next prime is 66121469. The reversal of 66121466 is 66412166.

It is not an unprimeable number, because it can be changed into a prime (66121469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79931 + ... + 80753.

It is an arithmetic number, because the mean of its divisors is an integer number (4426940).

Almost surely, 2^66121466 is an apocalyptic number.

66121466 is a deficient number, since it is larger than the sum of its proper divisors (40125094).

66121466 is a wasteful number, since it uses less digits than its factorization.

66121466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 981 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 66121466 is about 8131.5106837537. The cubic root of 66121466 is about 404.3717659180.

The spelling of 66121466 in words is "sixty-six million, one hundred twenty-one thousand, four hundred sixty-six".