66532190 has 8 divisors (see below), whose sum is σ = 119757960. Its totient is φ = 26612872.

The previous prime is 66532189. The next prime is 66532201. The reversal of 66532190 is 9123566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66532190² = 8853064612392200, which contains 22 as substring.

It is a Curzon number.

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, 3326600 + ... + 3326619.

It is an arithmetic number, because the mean of its divisors is an integer number (14969745).

Almost surely, 2^66532190 is an apocalyptic number.

66532190 is a deficient number, since it is larger than the sum of its proper divisors (53225770).

66532190 is a wasteful number, since it uses less digits than its factorization.

66532190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6653226.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 66532190 is about 8156.7266718948. The cubic root of 66532190 is about 405.2073114318.

The spelling of 66532190 in words is "sixty-six million, five hundred thirty-two thousand, one hundred ninety".