140564654 has 4 divisors (see below), whose sum is σ = 210846984. Its totient is φ = 70282326.

The previous prime is 140564651. The next prime is 140564659. The reversal of 140564654 is 456465041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 456465041 = 37 ⋅12336893.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140564651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35141162 + ... + 35141165.

It is an arithmetic number, because the mean of its divisors is an integer number (52711746).

Almost surely, 2^140564654 is an apocalyptic number.

140564654 is a deficient number, since it is larger than the sum of its proper divisors (70282330).

140564654 is an equidigital number, since it uses as much as digits as its factorization.

140564654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70282329.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 140564654 is about 11855.9965418349. The cubic root of 140564654 is about 519.9465600901.

The spelling of 140564654 in words is "one hundred forty million, five hundred sixty-four thousand, six hundred fifty-four".