87402667 has 4 divisors (see below), whose sum is σ = 95348376. Its totient is φ = 79456960.

The previous prime is 87402647. The next prime is 87402701. The reversal of 87402667 is 76620478.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87402667 - 2¹⁵ = 87369899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87402647) 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, 3972838 + ... + 3972859.

It is an arithmetic number, because the mean of its divisors is an integer number (23837094).

Almost surely, 2^87402667 is an apocalyptic number.

87402667 is a deficient number, since it is larger than the sum of its proper divisors (7945709).

87402667 is a wasteful number, since it uses less digits than its factorization.

87402667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945708.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 87402667 is about 9348.9393516056. The cubic root of 87402667 is about 443.7873257765.

The spelling of 87402667 in words is "eighty-seven million, four hundred two thousand, six hundred sixty-seven".