657464741 has 2 divisors, whose sum is σ = 657464742. Its totient is φ = 657464740.

The previous prime is 657464723. The next prime is 657464767. The reversal of 657464741 is 147464756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584430625 + 73034116 = 24175^2 + 8546^2 .

It is a cyclic number.

It is not a de Polignac number, because 657464741 - 2²⁶ = 590355877 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 657464692 and 657464701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657464701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328732370 + 328732371.

It is an arithmetic number, because the mean of its divisors is an integer number (328732371).

Almost surely, 2^657464741 is an apocalyptic number.

It is an amenable number.

657464741 is a deficient number, since it is larger than the sum of its proper divisors (1).

657464741 is an equidigital number, since it uses as much as digits as its factorization.

657464741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 44.

The square root of 657464741 is about 25641.0752699648. The cubic root of 657464741 is about 869.5425176591.

The spelling of 657464741 in words is "six hundred fifty-seven million, four hundred sixty-four thousand, seven hundred forty-one".