775500087 has 8 divisors (see below), whose sum is σ = 1040586736. Its totient is φ = 513706752.

The previous prime is 775500083. The next prime is 775500091. The reversal of 775500087 is 780005577.

It is an interprime number because it is at equal distance from previous prime (775500083) and next prime (775500091).

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

It is not a de Polignac number, because 775500087 - 2² = 775500083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775500083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822778 + ... + 823719.

It is an arithmetic number, because the mean of its divisors is an integer number (130073342).

Almost surely, 2^775500087 is an apocalyptic number.

775500087 is a deficient number, since it is larger than the sum of its proper divisors (265086649).

775500087 is a wasteful number, since it uses less digits than its factorization.

775500087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646657.

The product of its (nonzero) digits is 68600, while the sum is 39.

The square root of 775500087 is about 27847.8021933509. The cubic root of 775500087 is about 918.7428035162.

The spelling of 775500087 in words is "seven hundred seventy-five million, five hundred thousand, eighty-seven".