1356778704 has 120 divisors (see below), whose sum is σ = 3804363648. Its totient is φ = 416399360.

The previous prime is 1356778697. The next prime is 1356778711. The reversal of 1356778704 is 4078776531.

It is an interprime number because it is at equal distance from previous prime (1356778697) and next prime (1356778711).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 650944 + ... + 653024.

Almost surely, 2^1356778704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356778704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902181824).

1356778704 is an abundant number, since it is smaller than the sum of its proper divisors (2447584944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1356778704 is a wasteful number, since it uses less digits than its factorization.

1356778704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The square root of 1356778704 is about 36834.4771104464. The cubic root of 1356778704 is about 1107.0562108274.

The spelling of 1356778704 in words is "one billion, three hundred fifty-six million, seven hundred seventy-eight thousand, seven hundred four".