1355696657 has 4 divisors (see below), whose sum is σ = 1549367616. Its totient is φ = 1162025700.

The previous prime is 1355696653. The next prime is 1355696711. The reversal of 1355696657 is 7566965531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1355696657 - 2² = 1355696653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1355696599 and 1355696608.

It is not an unprimeable number, because it can be changed into a prime (1355696653) 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, 96835469 + ... + 96835482.

It is an arithmetic number, because the mean of its divisors is an integer number (387341904).

Almost surely, 2^1355696657 is an apocalyptic number.

It is an amenable number.

1355696657 is a deficient number, since it is larger than the sum of its proper divisors (193670959).

1355696657 is an equidigital number, since it uses as much as digits as its factorization.

1355696657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193670958.

The product of its digits is 5103000, while the sum is 53.

The square root of 1355696657 is about 36819.7862161094. The cubic root of 1355696657 is about 1106.7618357677.

The spelling of 1355696657 in words is "one billion, three hundred fifty-five million, six hundred ninety-six thousand, six hundred fifty-seven".