140506069 has 16 divisors (see below), whose sum is σ = 158146560. Its totient is φ = 123726960.

The previous prime is 140506061. The next prime is 140506097. The reversal of 140506069 is 960605041.

It is a cyclic number.

It is not a de Polignac number, because 140506069 - 2³ = 140506061 is a prime.

It is a super-2 number, since 2×140506069² = 39483910851665522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140506069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140506061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58902 + ... + 61240.

It is an arithmetic number, because the mean of its divisors is an integer number (9884160).

Almost surely, 2^140506069 is an apocalyptic number.

It is an amenable number.

140506069 is a deficient number, since it is larger than the sum of its proper divisors (17640491).

140506069 is a wasteful number, since it uses less digits than its factorization.

140506069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 140506069 is about 11853.5255936789. The cubic root of 140506069 is about 519.8743150384.

The spelling of 140506069 in words is "one hundred forty million, five hundred six thousand, sixty-nine".