91630515 has 16 divisors (see below), whose sum is σ = 147172608. Its totient is φ = 48681696.

The previous prime is 91630501. The next prime is 91630519. The reversal of 91630515 is 51503619.

It is not a de Polignac number, because 91630515 - 2⁴ = 91630499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91630519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7669 + ... + 15558.

It is an arithmetic number, because the mean of its divisors is an integer number (9198288).

Almost surely, 2^91630515 is an apocalyptic number.

91630515 is a deficient number, since it is larger than the sum of its proper divisors (55542093).

91630515 is a wasteful number, since it uses less digits than its factorization.

91630515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23498.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 91630515 is about 9572.3829321648. The cubic root of 91630515 is about 450.8305894495.

The spelling of 91630515 in words is "ninety-one million, six hundred thirty thousand, five hundred fifteen".