87145746 has 16 divisors (see below), whose sum is σ = 178543008. Its totient is φ = 28340000.

The previous prime is 87145739. The next prime is 87145753. The reversal of 87145746 is 64754178.

It is an interprime number because it is at equal distance from previous prime (87145739) and next prime (87145753).

It is a junction number, because it is equal to n+sod(n) for n = 87145698 and 87145707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176880 + ... + 177371.

It is an arithmetic number, because the mean of its divisors is an integer number (11158938).

Almost surely, 2^87145746 is an apocalyptic number.

87145746 is an abundant number, since it is smaller than the sum of its proper divisors (91397262).

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

87145746 is a wasteful number, since it uses less digits than its factorization.

87145746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354297.

The product of its digits is 188160, while the sum is 42.

The square root of 87145746 is about 9335.1885894180. The cubic root of 87145746 is about 443.3520599372.

The spelling of 87145746 in words is "eighty-seven million, one hundred forty-five thousand, seven hundred forty-six".