140634645 has 16 divisors (see below), whose sum is σ = 225193920. Its totient is φ = 74945664.

The previous prime is 140634643. The next prime is 140634649. The reversal of 140634645 is 546436041.

It is not a de Polignac number, because 140634645 - 2¹ = 140634643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140634643) 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, 21222 + ... + 27048.

It is an arithmetic number, because the mean of its divisors is an integer number (14074620).

Almost surely, 2^140634645 is an apocalyptic number.

140634645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140634645 is a deficient number, since it is larger than the sum of its proper divisors (84559275).

140634645 is a wasteful number, since it uses less digits than its factorization.

140634645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7444.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 140634645 is about 11858.9478875657. The cubic root of 140634645 is about 520.0328443258.

The spelling of 140634645 in words is "one hundred forty million, six hundred thirty-four thousand, six hundred forty-five".