146681457 has 16 divisors (see below), whose sum is σ = 223009920. Its totient is φ = 84955392.

The previous prime is 146681399. The next prime is 146681461. The reversal of 146681457 is 754186641.

It is not a de Polignac number, because 146681457 - 2²⁰ = 145632881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146681467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109957 + ... + 111282.

It is an arithmetic number, because the mean of its divisors is an integer number (13938120).

Almost surely, 2^146681457 is an apocalyptic number.

146681457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

146681457 is a deficient number, since it is larger than the sum of its proper divisors (76328463).

146681457 is a wasteful number, since it uses less digits than its factorization.

146681457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221272.

The product of its digits is 161280, while the sum is 42.

The square root of 146681457 is about 12111.2120367864. The cubic root of 146681457 is about 527.3817193228.

The spelling of 146681457 in words is "one hundred forty-six million, six hundred eighty-one thousand, four hundred fifty-seven".