77742010 has 8 divisors (see below), whose sum is σ = 139935636. Its totient is φ = 31096800.

The previous prime is 77741987. The next prime is 77742013. The reversal of 77742010 is 1024777.

It can be written as a sum of positive squares in 2 ways, for example, as 76860289 + 881721 = 8767^2 + 939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77742010.

It is not an unprimeable number, because it can be changed into a prime (77742013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3887091 + ... + 3887110.

Almost surely, 2^77742010 is an apocalyptic number.

77742010 is a deficient number, since it is larger than the sum of its proper divisors (62193626).

77742010 is a wasteful number, since it uses less digits than its factorization.

77742010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7774208.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 77742010 is about 8817.1429612999. The cubic root of 77742010 is about 426.7942780996.

Adding to 77742010 its reverse (1024777), we get a palindrome (78766787).

The spelling of 77742010 in words is "seventy-seven million, seven hundred forty-two thousand, ten".