87263001 has 72 divisors (see below), whose sum is σ = 157253824. Its totient is φ = 47355840.

The previous prime is 87262997. The next prime is 87263009. The reversal of 87263001 is 10036278.

It is not a de Polignac number, because 87263001 - 2² = 87262997 is a prime.

It is a super-2 number, since 2×87263001² = 15229662687052002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (87263009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1430511 + ... + 1430571.

Almost surely, 2^87263001 is an apocalyptic number.

87263001 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

87263001 is a deficient number, since it is larger than the sum of its proper divisors (69990823).

87263001 is an equidigital number, since it uses as much as digits as its factorization.

87263001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 87263001 is about 9341.4667477865. The cubic root of 87263001 is about 443.5508148971.

Adding to 87263001 its reverse (10036278), we get a palindrome (97299279).

The spelling of 87263001 in words is "eighty-seven million, two hundred sixty-three thousand, one".