140063561 has 12 divisors (see below), whose sum is σ = 162317040. Its totient is φ = 119837760.

The previous prime is 140063557. The next prime is 140063569. The reversal of 140063561 is 165360041.

It is not a de Polignac number, because 140063561 - 2² = 140063557 is a prime.

It is a super-2 number, since 2×140063561² = 39235602240001442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140063561.

It is not an unprimeable number, because it can be changed into a prime (140063569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18851 + ... + 25208.

It is an arithmetic number, because the mean of its divisors is an integer number (13526420).

Almost surely, 2^140063561 is an apocalyptic number.

140063561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140063561 is a deficient number, since it is larger than the sum of its proper divisors (22253479).

140063561 is a wasteful number, since it uses less digits than its factorization.

140063561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44104 (or 44087 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 140063561 is about 11834.8452038884. The cubic root of 140063561 is about 519.3279792764.

The spelling of 140063561 in words is "one hundred forty million, sixty-three thousand, five hundred sixty-one".