140655673 has 4 divisors (see below), whose sum is σ = 141970320. Its totient is φ = 139341028.

The previous prime is 140655661. The next prime is 140655703. The reversal of 140655673 is 376556041.

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, and also an emirpimes, since its reverse is a distinct semiprime: 376556041 = 19 ⋅19818739.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140655673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140655173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657163 + ... + 657376.

It is an arithmetic number, because the mean of its divisors is an integer number (35492580).

Almost surely, 2^140655673 is an apocalyptic number.

It is an amenable number.

140655673 is a deficient number, since it is larger than the sum of its proper divisors (1314647).

140655673 is a wasteful number, since it uses less digits than its factorization.

140655673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314646.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 140655673 is about 11859.8344423521. The cubic root of 140655673 is about 520.0587618506.

The spelling of 140655673 in words is "one hundred forty million, six hundred fifty-five thousand, six hundred seventy-three".