140634811 has 16 divisors (see below), whose sum is σ = 153052416. Its totient is φ = 128864736.

The previous prime is 140634803. The next prime is 140634821. The reversal of 140634811 is 118436041.

It is a cyclic number.

It is not a de Polignac number, because 140634811 - 2³ = 140634803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140634811.

It is not an unprimeable number, because it can be changed into a prime (140634821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51076 + ... + 53758.

It is an arithmetic number, because the mean of its divisors is an integer number (9565776).

Almost surely, 2^140634811 is an apocalyptic number.

140634811 is a deficient number, since it is larger than the sum of its proper divisors (12417605).

140634811 is a wasteful number, since it uses less digits than its factorization.

140634811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 140634811 is about 11858.9548864982. The cubic root of 140634811 is about 520.0330489350.

The spelling of 140634811 in words is "one hundred forty million, six hundred thirty-four thousand, eight hundred eleven".