140777690 has 16 divisors (see below), whose sum is σ = 258792192. Its totient is φ = 55112784.

The previous prime is 140777683. The next prime is 140777701. The reversal of 140777690 is 96777041.

It is a super-2 number, since 2×140777690² = 39636716003472200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149294 + ... + 150233.

It is an arithmetic number, because the mean of its divisors is an integer number (16174512).

Almost surely, 2^140777690 is an apocalyptic number.

140777690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140777690 is a deficient number, since it is larger than the sum of its proper divisors (118014502).

140777690 is a wasteful number, since it uses less digits than its factorization.

140777690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299581.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 140777690 is about 11864.9774546773. The cubic root of 140777690 is about 520.2090998316.

It can be divided in two parts, 1407 and 77690, that added together give a palindrome (79097).

The spelling of 140777690 in words is "one hundred forty million, seven hundred seventy-seven thousand, six hundred ninety".