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657112061 is a prime number
BaseRepresentation
bin100111001010101…
…011101111111101
31200210110202021202
4213022223233331
52321210041221
6145112105245
722166234414
oct4712535775
91623422252
10657112061
11307a17021
12164095225
13a61a4208
14633b247b
153ca4ed0b
hex272abbfd

657112061 has 2 divisors, whose sum is σ = 657112062. Its totient is φ = 657112060.

The previous prime is 657112031. The next prime is 657112091. The reversal of 657112061 is 160211756.

It is a balanced prime because it is at equal distance from previous prime (657112031) and next prime (657112091).

It can be written as a sum of positive squares in only one way, i.e., 655052836 + 2059225 = 25594^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 657112061 - 26 = 657111997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657112031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328556030 + 328556031.

It is an arithmetic number, because the mean of its divisors is an integer number (328556031).

Almost surely, 2657112061 is an apocalyptic number.

It is an amenable number.

657112061 is a deficient number, since it is larger than the sum of its proper divisors (1).

657112061 is an equidigital number, since it uses as much as digits as its factorization.

657112061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 657112061 is about 25634.1971007481. The cubic root of 657112061 is about 869.3870086321.

The spelling of 657112061 in words is "six hundred fifty-seven million, one hundred twelve thousand, sixty-one".