87744066 has 32 divisors (see below), whose sum is σ = 179081280. Its totient is φ = 28655616.

The previous prime is 87744049. The next prime is 87744067. The reversal of 87744066 is 66044778.

It is a super-2 number, since 2×87744066² = 15398042236424712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87744067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61570 + ... + 62978.

It is an arithmetic number, because the mean of its divisors is an integer number (5596290).

Almost surely, 2^87744066 is an apocalyptic number.

87744066 is an abundant number, since it is smaller than the sum of its proper divisors (91337214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87744066 is a wasteful number, since it uses less digits than its factorization.

87744066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 87744066 is about 9367.1802587545. The cubic root of 87744066 is about 444.3643932537.

The spelling of 87744066 in words is "eighty-seven million, seven hundred forty-four thousand, sixty-six".