87371397 has 6 divisors (see below), whose sum is σ = 126203142. Its totient is φ = 58247592.

The previous prime is 87371387. The next prime is 87371429. The reversal of 87371397 is 79317378.

It can be written as a sum of positive squares in only one way, i.e., 69655716 + 17715681 = 8346^2 + 4209^2 .

It is not a de Polignac number, because 87371397 - 2⁷ = 87371269 is a prime.

It is a super-2 number, since 2×87371397² = 15267522027463218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87371327) 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 5 ways as a sum of consecutive naturals, for example, 4853958 + ... + 4853975.

It is an arithmetic number, because the mean of its divisors is an integer number (21033857).

Almost surely, 2^87371397 is an apocalyptic number.

It is an amenable number.

87371397 is a deficient number, since it is larger than the sum of its proper divisors (38831745).

87371397 is a wasteful number, since it uses less digits than its factorization.

87371397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9707939 (or 9707936 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 87371397 is about 9347.2668197714. The cubic root of 87371397 is about 443.7343949548.

The spelling of 87371397 in words is "eighty-seven million, three hundred seventy-one thousand, three hundred ninety-seven".