1378707 has 16 divisors (see below), whose sum is σ = 2056320. Its totient is φ = 814400.

The previous prime is 1378703. The next prime is 1378721. The reversal of 1378707 is 7078731.

It is a cyclic number.

It is not a de Polignac number, because 1378707 - 2² = 1378703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1378703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844 + ... + 1862.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2^1378707 is an apocalyptic number.

1378707 is a deficient number, since it is larger than the sum of its proper divisors (677613).

1378707 is a wasteful number, since it uses less digits than its factorization.

1378707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 1378707 is about 1174.1835461290. The cubic root of 1378707 is about 111.2988456970.

The spelling of 1378707 in words is "one million, three hundred seventy-eight thousand, seven hundred seven".