87293693 has 8 divisors (see below), whose sum is σ = 89815128. Its totient is φ = 84780864.

The previous prime is 87293677. The next prime is 87293699. The reversal of 87293693 is 39639278.

It can be written as a sum of positive squares in 4 ways, for example, as 840889 + 86452804 = 917^2 + 9298^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 87293693 - 2⁴ = 87293677 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 (87293699) 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, 22355 + ... + 25967.

It is an arithmetic number, because the mean of its divisors is an integer number (11226891).

Almost surely, 2^87293693 is an apocalyptic number.

It is an amenable number.

87293693 is a deficient number, since it is larger than the sum of its proper divisors (2521435).

87293693 is a wasteful number, since it uses less digits than its factorization.

87293693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303.

The product of its digits is 489888, while the sum is 47.

The square root of 87293693 is about 9343.1093860663. The cubic root of 87293693 is about 443.6028104574.

The spelling of 87293693 in words is "eighty-seven million, two hundred ninety-three thousand, six hundred ninety-three".