140564970 has 160 divisors (see below), whose sum is σ = 465429888. Its totient is φ = 29642112.

The previous prime is 140564947. The next prime is 140564971. The reversal of 140564970 is 79465041.

140564970 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 649 + 7 + 0 = 666.

It is a super-2 number, since 2×140564970² = 39517021582201800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140564971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 72757 + ... + 74663.

Almost surely, 2^140564970 is an apocalyptic number.

140564970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140564970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232714944).

140564970 is an abundant number, since it is smaller than the sum of its proper divisors (324864918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140564970 is a wasteful number, since it uses less digits than its factorization.

140564970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 140564970 is about 11856.0098684169. The cubic root of 140564970 is about 519.9469497162.

The spelling of 140564970 in words is "one hundred forty million, five hundred sixty-four thousand, nine hundred seventy".