1355620663 has 8 divisors (see below), whose sum is σ = 1364757408. Its totient is φ = 1346496384.

The previous prime is 1355620661. The next prime is 1355620691. The reversal of 1355620663 is 3660265531.

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 1355620663 - 2¹ = 1355620661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355620661) 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, 330795 + ... + 334867.

It is an arithmetic number, because the mean of its divisors is an integer number (170594676).

Almost surely, 2^1355620663 is an apocalyptic number.

1355620663 is a deficient number, since it is larger than the sum of its proper divisors (9136745).

1355620663 is a wasteful number, since it uses less digits than its factorization.

1355620663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 1355620663 is about 36818.7542293326. The cubic root of 1355620663 is about 1106.7411554210.

The spelling of 1355620663 in words is "one billion, three hundred fifty-five million, six hundred twenty thousand, six hundred sixty-three".