987225623 has 2 divisors, whose sum is σ = 987225624. Its totient is φ = 987225622.

The previous prime is 987225607. The next prime is 987225671. The reversal of 987225623 is 326522789.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 987225623 - 2⁴ = 987225607 is a prime.

It is a super-2 number, since 2×987225623² = 1949228861415476258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987225023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493612811 + 493612812.

It is an arithmetic number, because the mean of its divisors is an integer number (493612812).

Almost surely, 2^987225623 is an apocalyptic number.

987225623 is a deficient number, since it is larger than the sum of its proper divisors (1).

987225623 is an equidigital number, since it uses as much as digits as its factorization.

987225623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 987225623 is about 31420.1467692307. The cubic root of 987225623 is about 995.7236129150.

The spelling of 987225623 in words is "nine hundred eighty-seven million, two hundred twenty-five thousand, six hundred twenty-three".