66629190 has 16 divisors (see below), whose sum is σ = 159910128. Its totient is φ = 17767776.

The previous prime is 66629117. The next prime is 66629243. The reversal of 66629190 is 9192666.

It is a super-2 number, since 2×66629190² = 8878897920112200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110457 + ... + 1110516.

It is an arithmetic number, because the mean of its divisors is an integer number (9994383).

Almost surely, 2^66629190 is an apocalyptic number.

66629190 is an abundant number, since it is smaller than the sum of its proper divisors (93280938).

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

66629190 is a wasteful number, since it uses less digits than its factorization.

66629190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220983.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 66629190 is about 8162.6705188927. The cubic root of 66629190 is about 405.4041385774.

The spelling of 66629190 in words is "sixty-six million, six hundred twenty-nine thousand, one hundred ninety".