87626064289 has 3 divisors (see below), whose sum is σ = 87626360307. Its totient is φ = 87625768272.

The previous prime is 87626064247. The next prime is 87626064293. The reversal of 87626064289 is 98246062678.

The square root of 87626064289 is 296017.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 87530181025 + 95883264 = 295855^2 + 9792^2 .

It is not a de Polignac number, because 87626064289 - 2²³ = 87617675681 is a prime.

It is a super-2 number, since 2×87626064289² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87626064089) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 148009 + ... + 444025.

It is an arithmetic number, because the mean of its divisors is an integer number (29208786769).

Almost surely, 2^87626064289 is an apocalyptic number.

87626064289 is the 296017-th square number.

87626064289 is the 148009-th centered octagonal number.

It is an amenable number.

87626064289 is a deficient number, since it is larger than the sum of its proper divisors (296018).

87626064289 is an frugal number, since it uses more digits than its factorization.

87626064289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592034 (or 296017 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 87626064289 in words is "eighty-seven billion, six hundred twenty-six million, sixty-four thousand, two hundred eighty-nine".