77140634 has 12 divisors (see below), whose sum is σ = 118954782. Its totient is φ = 37491120.

The previous prime is 77140631. The next prime is 77140699. The reversal of 77140634 is 43604177.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 76615009 + 525625 = 8753^2 + 725^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77140634.

It is not an unprimeable number, because it can be changed into a prime (77140631) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 75044 + ... + 76064.

Almost surely, 2^77140634 is an apocalyptic number.

77140634 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

77140634 is a deficient number, since it is larger than the sum of its proper divisors (41814148).

77140634 is an equidigital number, since it uses as much as digits as its factorization.

77140634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 77140634 is about 8782.9740976505. The cubic root of 77140634 is about 425.6909342519.

The spelling of 77140634 in words is "seventy-seven million, one hundred forty thousand, six hundred thirty-four".