91647467 has 4 divisors (see below), whose sum is σ = 91777440. Its totient is φ = 91517496.

The previous prime is 91647461. The next prime is 91647497. The reversal of 91647467 is 76474619.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91647467 - 2¹⁴ = 91631083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91647461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63923 + ... + 65340.

It is an arithmetic number, because the mean of its divisors is an integer number (22944360).

Almost surely, 2^91647467 is an apocalyptic number.

91647467 is a deficient number, since it is larger than the sum of its proper divisors (129973).

91647467 is a wasteful number, since it uses less digits than its factorization.

91647467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129972.

The product of its digits is 254016, while the sum is 44.

The square root of 91647467 is about 9573.2683551648. The cubic root of 91647467 is about 450.8583895366.

The spelling of 91647467 in words is "ninety-one million, six hundred forty-seven thousand, four hundred sixty-seven".