87624443 has 4 divisors (see below), whose sum is σ = 92778840. Its totient is φ = 82470048.

The previous prime is 87624431. The next prime is 87624451. The reversal of 87624443 is 34442678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34442678 = 2 ⋅17221339.

It is a cyclic number.

It is not a de Polignac number, because 87624443 - 2⁶ = 87624379 is a prime.

It is a super-2 number, since 2×87624443² = 15356086022120498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87624397 and 87624406.

It is not an unprimeable number, because it can be changed into a prime (87624413) 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, 2577173 + ... + 2577206.

It is an arithmetic number, because the mean of its divisors is an integer number (23194710).

Almost surely, 2^87624443 is an apocalyptic number.

87624443 is a deficient number, since it is larger than the sum of its proper divisors (5154397).

87624443 is a wasteful number, since it uses less digits than its factorization.

87624443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154396.

The product of its digits is 129024, while the sum is 38.

The square root of 87624443 is about 9360.7928617185. The cubic root of 87624443 is about 444.1623648667.

The spelling of 87624443 in words is "eighty-seven million, six hundred twenty-four thousand, four hundred forty-three".