140457645 has 24 divisors (see below), whose sum is σ = 252479136. Its totient is φ = 74910096.

The previous prime is 140457637. The next prime is 140457697. The reversal of 140457645 is 546754041.

140457645 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 5 + 7 + 645 = 666.

It is not a de Polignac number, because 140457645 - 2³ = 140457637 is a prime.

It is a super-3 number, since 3×140457645³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56587 + ... + 59016.

It is an arithmetic number, because the mean of its divisors is an integer number (10519964).

Almost surely, 2^140457645 is an apocalyptic number.

140457645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140457645 is a deficient number, since it is larger than the sum of its proper divisors (112021491).

140457645 is an equidigital number, since it uses as much as digits as its factorization.

140457645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115623 (or 115611 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 140457645 is about 11851.4828186181. The cubic root of 140457645 is about 519.8145850291.

It can be divided in two parts, 1404 and 57645, that added together give a 10-th power (59049 = 3¹⁰).

The spelling of 140457645 in words is "one hundred forty million, four hundred fifty-seven thousand, six hundred forty-five".