153668 has 12 divisors (see below), whose sum is σ = 275772. Its totient is φ = 74880.

The previous prime is 153649. The next prime is 153689. The reversal of 153668 is 866351.

153668 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 7744 + 145924 = 88^2 + 382^2 .

It is a super-2 number, since 2×153668² = 47227708448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 153668.

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, 305 + ... + 632.

It is an arithmetic number, because the mean of its divisors is an integer number (22981).

2¹⁵³⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

153668 is a deficient number, since it is larger than the sum of its proper divisors (122104).

153668 is a wasteful number, since it uses less digits than its factorization.

153668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982 (or 980 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 153668 is about 392.0051020076. The cubic root of 153668 is about 53.5625378685.

The spelling of 153668 in words is "one hundred fifty-three thousand, six hundred sixty-eight".