91925761 has 8 divisors (see below), whose sum is σ = 93402504. Its totient is φ = 90455040.

The previous prime is 91925689. The next prime is 91925831. The reversal of 91925761 is 16752919.

It can be written as a sum of positive squares in 4 ways, for example, as 31708161 + 60217600 = 5631^2 + 7760^2 .

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 91925761 - 2¹⁵ = 91892993 is a prime.

It is a super-3 number, since 3×91925761³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91925461) 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 7 ways as a sum of consecutive naturals, for example, 36825 + ... + 39241.

It is an arithmetic number, because the mean of its divisors is an integer number (11675313).

Almost surely, 2^91925761 is an apocalyptic number.

It is an amenable number.

91925761 is a deficient number, since it is larger than the sum of its proper divisors (1476743).

91925761 is a wasteful number, since it uses less digits than its factorization.

91925761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011.

The product of its digits is 34020, while the sum is 40.

The square root of 91925761 is about 9587.7922901990. The cubic root of 91925761 is about 451.3142828340.

The spelling of 91925761 in words is "ninety-one million, nine hundred twenty-five thousand, seven hundred sixty-one".