140634623 has 2 divisors, whose sum is σ = 140634624. Its totient is φ = 140634622.

The previous prime is 140634617. The next prime is 140634643. The reversal of 140634623 is 326436041.

It is a weak prime.

It is an emirp because it is prime and its reverse (326436041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140634623 - 2⁸ = 140634367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140634643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70317311 + 70317312.

It is an arithmetic number, because the mean of its divisors is an integer number (70317312).

Almost surely, 2^140634623 is an apocalyptic number.

140634623 is a deficient number, since it is larger than the sum of its proper divisors (1).

140634623 is an equidigital number, since it uses as much as digits as its factorization.

140634623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 140634623 is about 11858.9469599961. The cubic root of 140634623 is about 520.0328172089.

The spelling of 140634623 in words is "one hundred forty million, six hundred thirty-four thousand, six hundred twenty-three".