87046639 has 8 divisors (see below), whose sum is σ = 89137152. Its totient is φ = 84980280.

The previous prime is 87046633. The next prime is 87046643. The reversal of 87046639 is 93664078.

It is a happy number.

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 87046639 - 2¹⁷ = 86915567 is a prime.

It is a super-2 number, since 2×87046639² = 15154234722392642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87046595 and 87046604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87046633) 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, 1362 + ... + 13264.

It is an arithmetic number, because the mean of its divisors is an integer number (11142144).

Almost surely, 2^87046639 is an apocalyptic number.

87046639 is a deficient number, since it is larger than the sum of its proper divisors (2090513).

87046639 is a wasteful number, since it uses less digits than its factorization.

87046639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12077.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 87046639 is about 9329.8788309388. The cubic root of 87046639 is about 443.1839279595.

The spelling of 87046639 in words is "eighty-seven million, forty-six thousand, six hundred thirty-nine".