77501140 has 12 divisors (see below), whose sum is σ = 162752436. Its totient is φ = 31000448.

The previous prime is 77501131. The next prime is 77501183. The reversal of 77501140 is 4110577.

It can be written as a sum of positive squares in 2 ways, for example, as 35976004 + 41525136 = 5998^2 + 6444^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1937509 + ... + 1937548.

It is an arithmetic number, because the mean of its divisors is an integer number (13562703).

Almost surely, 2^77501140 is an apocalyptic number.

It is an amenable number.

77501140 is an abundant number, since it is smaller than the sum of its proper divisors (85251296).

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

77501140 is a wasteful number, since it uses less digits than its factorization.

77501140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875066 (or 3875064 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 77501140 is about 8803.4731782405. The cubic root of 77501140 is about 426.3530396488.

The spelling of 77501140 in words is "seventy-seven million, five hundred one thousand, one hundred forty".