140696865 has 64 divisors (see below), whose sum is σ = 263969280. Its totient is φ = 70963200.

The previous prime is 140696861. The next prime is 140696891. The reversal of 140696865 is 568696041.

It is not a de Polignac number, because 140696865 - 2² = 140696861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140696865.

It is not an unprimeable number, because it can be changed into a prime (140696861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 350665 + ... + 351065.

It is an arithmetic number, because the mean of its divisors is an integer number (4124520).

Almost surely, 2^140696865 is an apocalyptic number.

140696865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140696865 is a deficient number, since it is larger than the sum of its proper divisors (123272415).

140696865 is a wasteful number, since it uses less digits than its factorization.

140696865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 140696865 is about 11861.5709330594. The cubic root of 140696865 is about 520.1095245137.

The spelling of 140696865 in words is "one hundred forty million, six hundred ninety-six thousand, eight hundred sixty-five".