158497668 has 96 divisors (see below), whose sum is σ = 484843520. Its totient is φ = 43817760.

The previous prime is 158497667. The next prime is 158497687. The reversal of 158497668 is 866794851.

158497668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×158497668² = 50243021522876448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (158497667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20055 + ... + 26817.

Almost surely, 2^158497668 is an apocalyptic number.

158497668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158497668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242421760).

158497668 is an abundant number, since it is smaller than the sum of its proper divisors (326345852).

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

158497668 is a wasteful number, since it uses less digits than its factorization.

158497668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814 (or 6806 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 158497668 is about 12589.5856961220. The cubic root of 158497668 is about 541.1790287890.

The spelling of 158497668 in words is "one hundred fifty-eight million, four hundred ninety-seven thousand, six hundred sixty-eight".