91620006 has 16 divisors (see below), whose sum is σ = 184003248. Its totient is φ = 30412800.

The previous prime is 91619993. The next prime is 91620007. The reversal of 91620006 is 60002619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91620007) 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, 30235 + ... + 33126.

It is an arithmetic number, because the mean of its divisors is an integer number (11500203).

Almost surely, 2^91620006 is an apocalyptic number.

91620006 is an abundant number, since it is smaller than the sum of its proper divisors (92383242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91620006 is a wasteful number, since it uses less digits than its factorization.

91620006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63607.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 91620006 is about 9571.8339935459. The cubic root of 91620006 is about 450.8133537073.

The spelling of 91620006 in words is "ninety-one million, six hundred twenty thousand, six".