87629953 has 2 divisors, whose sum is σ = 87629954. Its totient is φ = 87629952.

The previous prime is 87629929. The next prime is 87629959. The reversal of 87629953 is 35992678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 14493249 = 8552^2 + 3807^2 .

It is a cyclic number.

It is not a de Polignac number, because 87629953 - 2⁵ = 87629921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87629897 and 87629906.

It is not a weakly prime, because it can be changed into another prime (87629959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43814976 + 43814977.

It is an arithmetic number, because the mean of its divisors is an integer number (43814977).

Almost surely, 2^87629953 is an apocalyptic number.

It is an amenable number.

87629953 is a deficient number, since it is larger than the sum of its proper divisors (1).

87629953 is an equidigital number, since it uses as much as digits as its factorization.

87629953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 49.

The square root of 87629953 is about 9361.0871697683. The cubic root of 87629953 is about 444.1716746104.

The spelling of 87629953 in words is "eighty-seven million, six hundred twenty-nine thousand, nine hundred fifty-three".