140644870 has 8 divisors (see below), whose sum is σ = 253160784. Its totient is φ = 56257944.

The previous prime is 140644853. The next prime is 140644891. The reversal of 140644870 is 78446041.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7032234 + ... + 7032253.

It is an arithmetic number, because the mean of its divisors is an integer number (31645098).

Almost surely, 2^140644870 is an apocalyptic number.

140644870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140644870 is a deficient number, since it is larger than the sum of its proper divisors (112515914).

140644870 is a wasteful number, since it uses less digits than its factorization.

140644870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14064494.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 140644870 is about 11859.3789888004. The cubic root of 140644870 is about 520.0454472113.

The spelling of 140644870 in words is "one hundred forty million, six hundred forty-four thousand, eight hundred seventy".