77040700 has 54 divisors (see below), whose sum is σ = 183786848. Its totient is φ = 28010400.

The previous prime is 77040671. The next prime is 77040709. The reversal of 77040700 is 704077.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77040709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8917 + ... + 15283.

Almost surely, 2^77040700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77040700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91893424).

77040700 is an abundant number, since it is smaller than the sum of its proper divisors (106746148).

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

77040700 is a wasteful number, since it uses less digits than its factorization.

77040700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403 (or 6385 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 77040700 is about 8777.2831787518. The cubic root of 77040700 is about 425.5070303906.

Adding to 77040700 its reverse (704077), we get a palindrome (77744777).

The spelling of 77040700 in words is "seventy-seven million, forty thousand, seven hundred".