612538091 has 16 divisors (see below), whose sum is σ = 677956608. Its totient is φ = 548776800.

The previous prime is 612538079. The next prime is 612538099. The reversal of 612538091 is 190835216.

It is not a de Polignac number, because 612538091 - 2²² = 608343787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612538099) 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, 617606 + ... + 618596.

It is an arithmetic number, because the mean of its divisors is an integer number (42372288).

Almost surely, 2^612538091 is an apocalyptic number.

612538091 is a deficient number, since it is larger than the sum of its proper divisors (65418517).

612538091 is a wasteful number, since it uses less digits than its factorization.

612538091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 612538091 is about 24749.5068839765. The cubic root of 612538091 is about 849.2672305274.

The spelling of 612538091 in words is "six hundred twelve million, five hundred thirty-eight thousand, ninety-one".