87740067 has 4 divisors (see below), whose sum is σ = 116986760. Its totient is φ = 58493376.

The previous prime is 87740053. The next prime is 87740071. The reversal of 87740067 is 76004778.

It is a happy number.

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

It is not a de Polignac number, because 87740067 - 2¹¹ = 87738019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87740017) 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, 14623342 + ... + 14623347.

It is an arithmetic number, because the mean of its divisors is an integer number (29246690).

Almost surely, 2^87740067 is an apocalyptic number.

87740067 is a deficient number, since it is larger than the sum of its proper divisors (29246693).

87740067 is a wasteful number, since it uses less digits than its factorization.

87740067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29246692.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 87740067 is about 9366.9667982757. The cubic root of 87740067 is about 444.3576424071.

The spelling of 87740067 in words is "eighty-seven million, seven hundred forty thousand, sixty-seven".