77400100 has 18 divisors (see below), whose sum is σ = 167958434. Its totient is φ = 30960000.

The previous prime is 77400097. The next prime is 77400107. The reversal of 77400100 is 100477.

It can be written as a sum of positive squares in 3 ways, for example, as 381924 + 77018176 = 618^2 + 8776^2 .

It is not an unprimeable number, because it can be changed into a prime (77400107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 386901 + ... + 387100.

Almost surely, 2^77400100 is an apocalyptic number.

It is an amenable number.

77400100 is an abundant number, since it is smaller than the sum of its proper divisors (90558334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77400100 is a wasteful number, since it uses less digits than its factorization.

77400100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774015 (or 774008 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 77400100 is about 8797.7326624534. The cubic root of 77400100 is about 426.1676770180.

Adding to 77400100 its reverse (100477), we get a palindrome (77500577).

The spelling of 77400100 in words is "seventy-seven million, four hundred thousand, one hundred".