140669601 has 4 divisors (see below), whose sum is σ = 187559472. Its totient is φ = 93779732.

The previous prime is 140669591. The next prime is 140669603. The reversal of 140669601 is 106966041.

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 a cyclic number.

It is not a de Polignac number, because 140669601 - 2⁵ = 140669569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140669603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23444931 + ... + 23444936.

It is an arithmetic number, because the mean of its divisors is an integer number (46889868).

Almost surely, 2^140669601 is an apocalyptic number.

It is an amenable number.

140669601 is a deficient number, since it is larger than the sum of its proper divisors (46889871).

140669601 is an equidigital number, since it uses as much as digits as its factorization.

140669601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46889870.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 140669601 is about 11860.4216198245. The cubic root of 140669601 is about 520.0759270295.

The spelling of 140669601 in words is "one hundred forty million, six hundred sixty-nine thousand, six hundred one".