619947 has 8 divisors (see below), whose sum is σ = 918480. Its totient is φ = 413280.

The previous prime is 619921. The next prime is 619967. The reversal of 619947 is 749916.

It is not a de Polignac number, because 619947 - 2⁷ = 619819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (619967) 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, 11454 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (114810).

2⁶¹⁹⁹⁴⁷ is an apocalyptic number.

619947 is a deficient number, since it is larger than the sum of its proper divisors (298533).

619947 is a wasteful number, since it uses less digits than its factorization.

619947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22970 (or 22964 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 619947 is about 787.3671316483. The cubic root of 619947 is about 85.2677600216.

It can be divided in two parts, 61994 and 7, that added together give a square (62001 = 249²).

The spelling of 619947 in words is "six hundred nineteen thousand, nine hundred forty-seven".