87777742 has 8 divisors (see below), whose sum is σ = 141794856. Its totient is φ = 40512792.

The previous prime is 87777721. The next prime is 87777757. The reversal of 87777742 is 24777778.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688008 + ... + 1688059.

It is an arithmetic number, because the mean of its divisors is an integer number (17724357).

Almost surely, 2^87777742 is an apocalyptic number.

87777742 is a deficient number, since it is larger than the sum of its proper divisors (54017114).

87777742 is a wasteful number, since it uses less digits than its factorization.

87777742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376082.

The product of its digits is 1075648, while the sum is 49.

The square root of 87777742 is about 9368.9776389956. The cubic root of 87777742 is about 444.4212347093.

The spelling of 87777742 in words is "eighty-seven million, seven hundred seventy-seven thousand, seven hundred forty-two".