77350869 has 20 divisors (see below), whose sum is σ = 116622220. Its totient is φ = 51088320.

The previous prime is 77350849. The next prime is 77350877. The reversal of 77350869 is 96805377.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27436644 + 49914225 = 5238^2 + 7065^2 .

It is not a de Polignac number, because 77350869 - 2¹³ = 77342677 is a prime.

It is a super-2 number, since 2×77350869² = 11966313870110322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77350849) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4449 + ... + 13209.

It is an arithmetic number, because the mean of its divisors is an integer number (5831111).

Almost surely, 2^77350869 is an apocalyptic number.

It is an amenable number.

77350869 is a deficient number, since it is larger than the sum of its proper divisors (39271351).

77350869 is a wasteful number, since it uses less digits than its factorization.

77350869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8882 (or 8873 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 77350869 is about 8794.9342805958. The cubic root of 77350869 is about 426.0773019807.

The spelling of 77350869 in words is "seventy-seven million, three hundred fifty thousand, eight hundred sixty-nine".