87623045 has 8 divisors (see below), whose sum is σ = 107131896. Its totient is φ = 68775616.

The previous prime is 87623009. The next prime is 87623047. The reversal of 87623045 is 54032678.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17833729 + 69789316 = 4223^2 + 8354^2 .

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 87623045 - 2¹⁸ = 87360901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87622996 and 87623014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87623047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165062 + ... + 165591.

It is an arithmetic number, because the mean of its divisors is an integer number (13391487).

Almost surely, 2^87623045 is an apocalyptic number.

It is an amenable number.

87623045 is a deficient number, since it is larger than the sum of its proper divisors (19508851).

87623045 is a wasteful number, since it uses less digits than its factorization.

87623045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330711.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 87623045 is about 9360.7181882588. The cubic root of 87623045 is about 444.1600027317.

The spelling of 87623045 in words is "eighty-seven million, six hundred twenty-three thousand, forty-five".