87787494 has 12 divisors (see below), whose sum is σ = 190206276. Its totient is φ = 29262492.

The previous prime is 87787477. The next prime is 87787499. The reversal of 87787494 is 49478778.

87787494 is a `hidden beast` number, since 8 + 77 + 87 + 494 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 87787494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87787499) 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, 2438524 + ... + 2438559.

It is an arithmetic number, because the mean of its divisors is an integer number (15850523).

Almost surely, 2^87787494 is an apocalyptic number.

87787494 is an abundant number, since it is smaller than the sum of its proper divisors (102418782).

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

87787494 is a wasteful number, since it uses less digits than its factorization.

87787494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877091 (or 4877088 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 87787494 is about 9369.4980655316. The cubic root of 87787494 is about 444.4376923187.

The spelling of 87787494 in words is "eighty-seven million, seven hundred eighty-seven thousand, four hundred ninety-four".