612957091 has 4 divisors (see below), whose sum is σ = 613200672. Its totient is φ = 612713512.

The previous prime is 612957089. The next prime is 612957139. The reversal of 612957091 is 190759216.

612957091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612957091 - 2¹ = 612957089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612957001) 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, 117976 + ... + 123061.

It is an arithmetic number, because the mean of its divisors is an integer number (153300168).

Almost surely, 2^612957091 is an apocalyptic number.

612957091 is a deficient number, since it is larger than the sum of its proper divisors (243581).

612957091 is a wasteful number, since it uses less digits than its factorization.

612957091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243580.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 612957091 is about 24757.9702520219. The cubic root of 612957091 is about 849.4608303861.

It can be divided in two parts, 61295 and 7091, that added together give a palindrome (68386).

The spelling of 612957091 in words is "six hundred twelve million, nine hundred fifty-seven thousand, ninety-one".