681498153 has 24 divisors (see below), whose sum is σ = 1155422528. Its totient is φ = 378901152.

The previous prime is 681498151. The next prime is 681498157. The reversal of 681498153 is 351894186.

681498153 is a `hidden beast` number, since 6 + 8 + 1 + 498 + 153 = 666.

681498153 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 681498153 - 2¹ = 681498151 is a prime.

It is a super-2 number, since 2×681498153² = 928879465084822818, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 681498099 and 681498108.

It is not an unprimeable number, because it can be changed into a prime (681498151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143851 + ... + 148512.

Almost surely, 2^681498153 is an apocalyptic number.

681498153 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

681498153 is a deficient number, since it is larger than the sum of its proper divisors (473924375).

681498153 is a wasteful number, since it uses less digits than its factorization.

681498153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292413 (or 292410 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 681498153 is about 26105.5195887766. The cubic root of 681498153 is about 880.0112571735.

The spelling of 681498153 in words is "six hundred eighty-one million, four hundred ninety-eight thousand, one hundred fifty-three".