146812681 has 4 divisors (see below), whose sum is σ = 147427200. Its totient is φ = 146198164.

The previous prime is 146812669. The next prime is 146812739. The reversal of 146812681 is 186218641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 146812681 - 2⁷ = 146812553 is a prime.

It is a super-2 number, since 2×146812681² = 43107926604815522, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 146812681 parts by 17135 straight cuts.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146812681.

It is not an unprimeable number, because it can be changed into a prime (146810681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306901 + ... + 307378.

It is an arithmetic number, because the mean of its divisors is an integer number (36856800).

Almost surely, 2^146812681 is an apocalyptic number.

It is an amenable number.

146812681 is a deficient number, since it is larger than the sum of its proper divisors (614519).

146812681 is an equidigital number, since it uses as much as digits as its factorization.

146812681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614518.

The product of its digits is 18432, while the sum is 37.

The square root of 146812681 is about 12116.6282851295. The cubic root of 146812681 is about 527.5389409944.

The spelling of 146812681 in words is "one hundred forty-six million, eight hundred twelve thousand, six hundred eighty-one".