87006394 has 8 divisors (see below), whose sum is σ = 131070420. Its totient is φ = 43316256.

The previous prime is 87006383. The next prime is 87006397. The reversal of 87006394 is 49360078.

It can be written as a sum of positive squares in 2 ways, for example, as 86769225 + 237169 = 9315^2 + 487^2 .

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

It is a super-2 number, since 2×87006394² = 15140225193766472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87006397) 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, 92889 + ... + 93820.

Almost surely, 2^87006394 is an apocalyptic number.

87006394 is a deficient number, since it is larger than the sum of its proper divisors (44064026).

87006394 is a wasteful number, since it uses less digits than its factorization.

87006394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186944.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 87006394 is about 9327.7218011688. The cubic root of 87006394 is about 443.1156171213.

The spelling of 87006394 in words is "eighty-seven million, six thousand, three hundred ninety-four".