140220767 has 4 divisors (see below), whose sum is σ = 140297976. Its totient is φ = 140143560.

The previous prime is 140220737. The next prime is 140220803. The reversal of 140220767 is 767022041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 767022041 = 1553 ⋅493897.

It is a cyclic number.

It is not a de Polignac number, because 140220767 - 2⁸ = 140220511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140220727) 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, 35813 + ... + 39534.

It is an arithmetic number, because the mean of its divisors is an integer number (35074494).

Almost surely, 2^140220767 is an apocalyptic number.

140220767 is a deficient number, since it is larger than the sum of its proper divisors (77209).

140220767 is an equidigital number, since it uses as much as digits as its factorization.

140220767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77208.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 140220767 is about 11841.4849997794. The cubic root of 140220767 is about 519.5222028803.

The spelling of 140220767 in words is "one hundred forty million, two hundred twenty thousand, seven hundred sixty-seven".