140620697 has 4 divisors (see below), whose sum is σ = 160709376. Its totient is φ = 120532020.

The previous prime is 140620679. The next prime is 140620717. The reversal of 140620697 is 796026041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 140620697 - 2¹⁰ = 140619673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140620097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10044329 + ... + 10044342.

It is an arithmetic number, because the mean of its divisors is an integer number (40177344).

Almost surely, 2^140620697 is an apocalyptic number.

It is an amenable number.

140620697 is a deficient number, since it is larger than the sum of its proper divisors (20088679).

140620697 is an equidigital number, since it uses as much as digits as its factorization.

140620697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20088678.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 140620697 is about 11858.3597938332. The cubic root of 140620697 is about 520.0156516492.

The spelling of 140620697 in words is "one hundred forty million, six hundred twenty thousand, six hundred ninety-seven".