146563681 has 8 divisors (see below), whose sum is σ = 169293024. Its totient is φ = 125401920.

The previous prime is 146563679. The next prime is 146563693. The reversal of 146563681 is 186365641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146563681 - 2¹ = 146563679 is a prime.

It is a super-2 number, since 2×146563681² = 42961825176539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146563601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391695 + ... + 392068.

It is an arithmetic number, because the mean of its divisors is an integer number (21161628).

Almost surely, 2^146563681 is an apocalyptic number.

146563681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

146563681 is a deficient number, since it is larger than the sum of its proper divisors (22729343).

146563681 is a wasteful number, since it uses less digits than its factorization.

146563681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783791.

The product of its digits is 103680, while the sum is 40.

The square root of 146563681 is about 12106.3487889619. The cubic root of 146563681 is about 527.2405300584.

The spelling of 146563681 in words is "one hundred forty-six million, five hundred sixty-three thousand, six hundred eighty-one".