8725691 has 8 divisors (see below), whose sum is σ = 9597504. Its totient is φ = 7882560.

The previous prime is 8725681. The next prime is 8725699. The reversal of 8725691 is 1965278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8725691 - 2⁶ = 8725627 is a prime.

It is a super-2 number, since 2×8725691² = 152275366854962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8725699) 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 7 ways as a sum of consecutive naturals, for example, 6530 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (1199688).

Almost surely, 2^8725691 is an apocalyptic number.

8725691 is a deficient number, since it is larger than the sum of its proper divisors (871813).

8725691 is a wasteful number, since it uses less digits than its factorization.

8725691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14341.

The product of its digits is 30240, while the sum is 38.

The square root of 8725691 is about 2953.9280627666. The cubic root of 8725691 is about 205.8732607157.

It can be divided in two parts, 8 and 725691, that multiplied together give a triangular number (5805528 = T₃₄₀₇).

The spelling of 8725691 in words is "eight million, seven hundred twenty-five thousand, six hundred ninety-one".