660606622 has 8 divisors (see below), whose sum is σ = 1067133816. Its totient is φ = 304895352.

The previous prime is 660606619. The next prime is 660606647. The reversal of 660606622 is 226606066.

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 2×660606622² = 872802218060501768, 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 3 ways as a sum of consecutive naturals, for example, 12703948 + ... + 12703999.

It is an arithmetic number, because the mean of its divisors is an integer number (133391727).

Almost surely, 2^660606622 is an apocalyptic number.

660606622 is a deficient number, since it is larger than the sum of its proper divisors (406527194).

660606622 is a wasteful number, since it uses less digits than its factorization.

660606622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25407962.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 660606622 is about 25702.2688103599. The cubic root of 660606622 is about 870.9254352948.

The spelling of 660606622 in words is "six hundred sixty million, six hundred six thousand, six hundred twenty-two".