153678681 has 32 divisors (see below), whose sum is σ = 246059520. Its totient is φ = 94234752.

The previous prime is 153678667. The next prime is 153678683. The reversal of 153678681 is 186876351.

153678681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 153678681 - 2¹⁴ = 153662297 is a prime.

It is a super-2 number, since 2×153678681² = 47234273987799522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (153678683) 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, 128221 + ... + 129413.

It is an arithmetic number, because the mean of its divisors is an integer number (7689360).

Almost surely, 2^153678681 is an apocalyptic number.

It is an amenable number.

153678681 is a deficient number, since it is larger than the sum of its proper divisors (92380839).

153678681 is a wasteful number, since it uses less digits than its factorization.

153678681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1576 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 153678681 is about 12396.7205744100. The cubic root of 153678681 is about 535.6377882999.

The spelling of 153678681 in words is "one hundred fifty-three million, six hundred seventy-eight thousand, six hundred eighty-one".