77343290 has 16 divisors (see below), whose sum is σ = 144019080. Its totient is φ = 29870400.

The previous prime is 77343289. The next prime is 77343293. The reversal of 77343290 is 9234377.

It can be written as a sum of positive squares in 4 ways, for example, as 61669609 + 15673681 = 7853^2 + 3959^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77343290.

It is not an unprimeable number, because it can be changed into a prime (77343293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133061 + ... + 133640.

Almost surely, 2^77343290 is an apocalyptic number.

77343290 is a deficient number, since it is larger than the sum of its proper divisors (66675790).

77343290 is a wasteful number, since it uses less digits than its factorization.

77343290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266737.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 77343290 is about 8794.5033970088. The cubic root of 77343290 is about 426.0633855443.

The spelling of 77343290 in words is "seventy-seven million, three hundred forty-three thousand, two hundred ninety".