87494645 has 24 divisors (see below), whose sum is σ = 127453824. Its totient is φ = 57384096.

The previous prime is 87494621. The next prime is 87494647. The reversal of 87494645 is 54649478.

It is not a de Polignac number, because 87494645 - 2⁸ = 87494389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87494645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87494647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2129 + ... + 13398.

It is an arithmetic number, because the mean of its divisors is an integer number (5310576).

Almost surely, 2^87494645 is an apocalyptic number.

It is an amenable number.

87494645 is a deficient number, since it is larger than the sum of its proper divisors (39959179).

87494645 is a wasteful number, since it uses less digits than its factorization.

87494645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15569 (or 15562 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 87494645 is about 9353.8572257652. The cubic root of 87494645 is about 443.9429440657.

The spelling of 87494645 in words is "eighty-seven million, four hundred ninety-four thousand, six hundred forty-five".