87145774 has 32 divisors (see below), whose sum is σ = 144633600. Its totient is φ = 39198720.

The previous prime is 87145771. The next prime is 87145789. The reversal of 87145774 is 47754178.

It is a self number, because there is not a number n which added to its sum of digits gives 87145774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87145771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93342 + ... + 94270.

It is an arithmetic number, because the mean of its divisors is an integer number (4519800).

Almost surely, 2^87145774 is an apocalyptic number.

87145774 is a deficient number, since it is larger than the sum of its proper divisors (57487826).

87145774 is a wasteful number, since it uses less digits than its factorization.

87145774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068.

The product of its digits is 219520, while the sum is 43.

The square root of 87145774 is about 9335.1900891198. The cubic root of 87145774 is about 443.3521074204.

The spelling of 87145774 in words is "eighty-seven million, one hundred forty-five thousand, seven hundred seventy-four".