140634646 has 16 divisors (see below), whose sum is σ = 217361088. Its totient is φ = 68212800.

The previous prime is 140634643. The next prime is 140634649. The reversal of 140634646 is 646436041.

It is an interprime number because it is at equal distance from previous prime (140634643) and next prime (140634649).

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 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 16801.

It is an arithmetic number, because the mean of its divisors is an integer number (13585068).

Almost surely, 2^140634646 is an apocalyptic number.

140634646 is a deficient number, since it is larger than the sum of its proper divisors (76726442).

140634646 is a wasteful number, since it uses less digits than its factorization.

140634646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15927.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 140634646 is about 11858.9479297280. The cubic root of 140634646 is about 520.0328455584.

The spelling of 140634646 in words is "one hundred forty million, six hundred thirty-four thousand, six hundred forty-six".