140690 has 16 divisors (see below), whose sum is σ = 276480. Its totient is φ = 51120.

The previous prime is 140689. The next prime is 140717. The reversal of 140690 is 96041.

It is a super-2 number, since 2×140690² = 39587352200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 749.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2¹⁴⁰⁶⁹⁰ is an apocalyptic number.

140690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140690 is a deficient number, since it is larger than the sum of its proper divisors (135790).

140690 is a wasteful number, since it uses less digits than its factorization.

140690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 140690 is about 375.0866566542. The cubic root of 140690 is about 52.0101065169.

The spelling of 140690 in words is "one hundred forty thousand, six hundred ninety".