657112073 has 8 divisors (see below), whose sum is σ = 692598600. Its totient is φ = 622480768.

The previous prime is 657112061. The next prime is 657112091. The reversal of 657112073 is 370211756.

It can be written as a sum of positive squares in 4 ways, for example, as 163916809 + 493195264 = 12803^2 + 22208^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 657112073 - 2¹² = 657107977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (657112273) 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, 212228 + ... + 215301.

It is an arithmetic number, because the mean of its divisors is an integer number (86574825).

Almost surely, 2^657112073 is an apocalyptic number.

It is an amenable number.

657112073 is a deficient number, since it is larger than the sum of its proper divisors (35486527).

657112073 is a wasteful number, since it uses less digits than its factorization.

657112073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427611.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 657112073 is about 25634.1973348104. The cubic root of 657112073 is about 869.3870139243.

The spelling of 657112073 in words is "six hundred fifty-seven million, one hundred twelve thousand, seventy-three".