88621669 has 2 divisors, whose sum is σ = 88621670. Its totient is φ = 88621668.

The previous prime is 88621639. The next prime is 88621679. The reversal of 88621669 is 96612688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47789569 + 40832100 = 6913^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 88621669 - 2²¹ = 86524517 is a prime.

It is a super-2 number, since 2×88621669² = 15707600432691122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88621639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44310834 + 44310835.

It is an arithmetic number, because the mean of its divisors is an integer number (44310835).

Almost surely, 2^88621669 is an apocalyptic number.

It is an amenable number.

88621669 is a deficient number, since it is larger than the sum of its proper divisors (1).

88621669 is an equidigital number, since it uses as much as digits as its factorization.

88621669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 88621669 is about 9413.9082744628. The cubic root of 88621669 is about 445.8409699995.

The spelling of 88621669 in words is "eighty-eight million, six hundred twenty-one thousand, six hundred sixty-nine".