140561769 has 8 divisors (see below), whose sum is σ = 188056512. Its totient is φ = 93387440.

The previous prime is 140561761. The next prime is 140561789. The reversal of 140561769 is 967165041.

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

It is a cyclic number.

It is not a de Polignac number, because 140561769 - 2³ = 140561761 is a prime.

It is a super-2 number, since 2×140561769² = 39515221808818722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140561761) 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, 79077 + ... + 80834.

It is an arithmetic number, because the mean of its divisors is an integer number (23507064).

Almost surely, 2^140561769 is an apocalyptic number.

It is an amenable number.

140561769 is a deficient number, since it is larger than the sum of its proper divisors (47494743).

140561769 is a wasteful number, since it uses less digits than its factorization.

140561769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160207.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 140561769 is about 11855.8748728215. The cubic root of 140561769 is about 519.9430028751.

The spelling of 140561769 in words is "one hundred forty million, five hundred sixty-one thousand, seven hundred sixty-nine".