91488070 has 16 divisors (see below), whose sum is σ = 167786640. Its totient is φ = 35904544.

The previous prime is 91488049. The next prime is 91488073. The reversal of 91488070 is 7088419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91488073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85780 + ... + 86839.

It is an arithmetic number, because the mean of its divisors is an integer number (10486665).

Almost surely, 2^91488070 is an apocalyptic number.

91488070 is a deficient number, since it is larger than the sum of its proper divisors (76298570).

91488070 is a wasteful number, since it uses less digits than its factorization.

91488070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172679.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 91488070 is about 9564.9396234373. The cubic root of 91488070 is about 450.5968541076.

The spelling of 91488070 in words is "ninety-one million, four hundred eighty-eight thousand, seventy".