616477 has 4 divisors (see below), whose sum is σ = 618300. Its totient is φ = 614656.

The previous prime is 616463. The next prime is 616481. The reversal of 616477 is 774616.

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

It can be written as a sum of positive squares in 2 ways, for example, as 527076 + 89401 = 726^2 + 299^2 .

It is a 4-Lehmer number, since φ(616477) divides (616477-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 616477 - 2¹⁹ = 92189 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (154575).

2⁶¹⁶⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

616477 is a deficient number, since it is larger than the sum of its proper divisors (1823).

616477 is a wasteful number, since it uses less digits than its factorization.

616477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its digits is 7056, while the sum is 31.

The square root of 616477 is about 785.1604931477. The cubic root of 616477 is about 85.1083738767.

It can be divided in two parts, 6164 and 77, that added together give a square (6241 = 79²).

The spelling of 616477 in words is "six hundred sixteen thousand, four hundred seventy-seven".