77701740 has 48 divisors (see below), whose sum is σ = 219579360. Its totient is φ = 20530368.

The previous prime is 77701727. The next prime is 77701769. The reversal of 77701740 is 4710777.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 545 × 327 × 436.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 712806 + ... + 712914.

It is an arithmetic number, because the mean of its divisors is an integer number (4574570).

Almost surely, 2^77701740 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 77701740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109789680).

77701740 is an abundant number, since it is smaller than the sum of its proper divisors (141877620).

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

77701740 is an equidigital number, since it uses as much as digits as its factorization.

77701740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 9604, while the sum is 33.

The square root of 77701740 is about 8814.8590459519. The cubic root of 77701740 is about 426.7205728874.

The spelling of 77701740 in words is "seventy-seven million, seven hundred one thousand, seven hundred forty".