87261737 has 4 divisors (see below), whose sum is σ = 91854480. Its totient is φ = 82668996.

The previous prime is 87261709. The next prime is 87261743. The reversal of 87261737 is 73716278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87261737 - 2⁶ = 87261673 is a prime.

It is a super-2 number, since 2×87261737² = 15229221488514338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87261694 and 87261703.

It is not an unprimeable number, because it can be changed into a prime (87261787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2296343 + ... + 2296380.

It is an arithmetic number, because the mean of its divisors is an integer number (22963620).

Almost surely, 2^87261737 is an apocalyptic number.

It is an amenable number.

87261737 is a deficient number, since it is larger than the sum of its proper divisors (4592743).

87261737 is a wasteful number, since it uses less digits than its factorization.

87261737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592742.

The product of its digits is 98784, while the sum is 41.

The square root of 87261737 is about 9341.3990922131. The cubic root of 87261737 is about 443.5486732833.

The spelling of 87261737 in words is "eighty-seven million, two hundred sixty-one thousand, seven hundred thirty-seven".