622378 has 4 divisors (see below), whose sum is σ = 933570. Its totient is φ = 311188.

The previous prime is 622367. The next prime is 622397. The reversal of 622378 is 873226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 480249 + 142129 = 693^2 + 377^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155593 + ... + 155596.

2⁶²²³⁷⁸ is an apocalyptic number.

622378 is a deficient number, since it is larger than the sum of its proper divisors (311192).

622378 is a wasteful number, since it uses less digits than its factorization.

622378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311191.

The product of its digits is 4032, while the sum is 28.

The square root of 622378 is about 788.9093737559. The cubic root of 622378 is about 85.3790682300.

It can be divided in two parts, 622 and 378, that added together give a cube (1000 = 10³).

The spelling of 622378 in words is "six hundred twenty-two thousand, three hundred seventy-eight".