77701490 has 16 divisors (see below), whose sum is σ = 140638680. Its totient is φ = 30908160.

The previous prime is 77701489. The next prime is 77701513. The reversal of 77701490 is 9410777.

It can be written as a sum of positive squares in 4 ways, for example, as 10936249 + 66765241 = 3307^2 + 8171^2 .

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 77701490.

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, 19655 + ... + 23274.

Almost surely, 2^77701490 is an apocalyptic number.

77701490 is a deficient number, since it is larger than the sum of its proper divisors (62937190).

77701490 is a wasteful number, since it uses less digits than its factorization.

77701490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43117.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 77701490 is about 8814.8448653394. The cubic root of 77701490 is about 426.7201152389.

The spelling of 77701490 in words is "seventy-seven million, seven hundred one thousand, four hundred ninety".