77383690 has 16 divisors (see below), whose sum is σ = 140728392. Its totient is φ = 30633984.

The previous prime is 77383679. The next prime is 77383693. The reversal of 77383690 is 9638377.

It can be written as a sum of positive squares in 4 ways, for example, as 72539289 + 4844401 = 8517^2 + 2201^2 .

It is a super-3 number, since 3×77383690³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (77383693) 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, 38919 + ... + 40858.

Almost surely, 2^77383690 is an apocalyptic number.

77383690 is a deficient number, since it is larger than the sum of its proper divisors (63344702).

77383690 is a wasteful number, since it uses less digits than its factorization.

77383690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79881.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 77383690 is about 8796.7999863587. The cubic root of 77383690 is about 426.1375568766.

The spelling of 77383690 in words is "seventy-seven million, three hundred eighty-three thousand, six hundred ninety".