775730900 has 144 divisors (see below), whose sum is σ = 2012287872. Its totient is φ = 254016000.

The previous prime is 775730869. The next prime is 775730903. The reversal of 775730900 is 9037577.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775730903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1579655 + ... + 1580145.

Almost surely, 2^775730900 is an apocalyptic number.

775730900 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775730900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006143936).

775730900 is an abundant number, since it is smaller than the sum of its proper divisors (1236556972).

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

775730900 is a wasteful number, since it uses less digits than its factorization.

775730900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 46305, while the sum is 38.

The square root of 775730900 is about 27851.9460720432. The cubic root of 775730900 is about 918.8339433073.

The spelling of 775730900 in words is "seven hundred seventy-five million, seven hundred thirty thousand, nine hundred".