87787946 has 8 divisors (see below), whose sum is σ = 132890340. Its totient is φ = 43491168.

The previous prime is 87787943. The next prime is 87787951. The reversal of 87787946 is 64978778.

It can be written as a sum of positive squares in 2 ways, for example, as 76825225 + 10962721 = 8765^2 + 3311^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87787891 and 87787900.

It is not an unprimeable number, because it can be changed into a prime (87787943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201131 + ... + 201566.

Almost surely, 2^87787946 is an apocalyptic number.

87787946 is a deficient number, since it is larger than the sum of its proper divisors (45102394).

87787946 is a wasteful number, since it uses less digits than its factorization.

87787946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402808.

The product of its digits is 4741632, while the sum is 56.

The square root of 87787946 is about 9369.5221863231. The cubic root of 87787946 is about 444.4384550906.

The spelling of 87787946 in words is "eighty-seven million, seven hundred eighty-seven thousand, nine hundred forty-six".