91516070 has 8 divisors (see below), whose sum is σ = 164728944. Its totient is φ = 36606424.

The previous prime is 91516069. The next prime is 91516079. The reversal of 91516070 is 7061519.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91516079) 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, 4575794 + ... + 4575813.

It is an arithmetic number, because the mean of its divisors is an integer number (20591118).

Almost surely, 2^91516070 is an apocalyptic number.

91516070 is a deficient number, since it is larger than the sum of its proper divisors (73212874).

91516070 is a wasteful number, since it uses less digits than its factorization.

91516070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9151614.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 91516070 is about 9566.4031903323. The cubic root of 91516070 is about 450.6428179330.

Adding to 91516070 its reverse (7061519), we get a palindrome (98577589).

The spelling of 91516070 in words is "ninety-one million, five hundred sixteen thousand, seventy".