1264657 has 2 divisors, whose sum is σ = 1264658. Its totient is φ = 1264656.

The previous prime is 1264651. The next prime is 1264663. The reversal of 1264657 is 7564621.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1264651) and next prime (1264663).

It can be written as a sum of positive squares in only one way, i.e., 853776 + 410881 = 924^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264657 - 2³ = 1264649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632328 + 632329.

It is an arithmetic number, because the mean of its divisors is an integer number (632329).

2^1264657 is an apocalyptic number.

It is an amenable number.

1264657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264657 is an equidigital number, since it uses as much as digits as its factorization.

1264657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 1264657 is about 1124.5696954836. The cubic root of 1264657 is about 108.1411335031.

The spelling of 1264657 in words is "one million, two hundred sixty-four thousand, six hundred fifty-seven".