354378681 has 12 divisors (see below), whose sum is σ = 512065840. Its totient is φ = 236166840.

The previous prime is 354378677. The next prime is 354378697. The reversal of 354378681 is 186873453.

It is not a de Polignac number, because 354378681 - 2² = 354378677 is a prime.

It is a super-2 number, since 2×354378681² = 251168499094599522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (354378601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28386 + ... + 38916.

Almost surely, 2^354378681 is an apocalyptic number.

It is an amenable number.

354378681 is a deficient number, since it is larger than the sum of its proper divisors (157687159).

354378681 is a wasteful number, since it uses less digits than its factorization.

354378681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14276 (or 14273 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 354378681 is about 18824.9483664631. The cubic root of 354378681 is about 707.6565472445.

The spelling of 354378681 in words is "three hundred fifty-four million, three hundred seventy-eight thousand, six hundred eighty-one".