158422666 has 16 divisors (see below), whose sum is σ = 248971968. Its totient is φ = 75460000.

The previous prime is 158422661. The next prime is 158422727. The reversal of 158422666 is 666224851.

It is a super-2 number, since 2×158422666² = 50195482205095112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158422661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4686 + ... + 18406.

It is an arithmetic number, because the mean of its divisors is an integer number (15560748).

Almost surely, 2^158422666 is an apocalyptic number.

158422666 is a deficient number, since it is larger than the sum of its proper divisors (90549302).

158422666 is a wasteful number, since it uses less digits than its factorization.

158422666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13997.

The product of its digits is 138240, while the sum is 40.

The square root of 158422666 is about 12586.6066117918. The cubic root of 158422666 is about 541.0936523203.

The spelling of 158422666 in words is "one hundred fifty-eight million, four hundred twenty-two thousand, six hundred sixty-six".