616461 has 4 divisors (see below), whose sum is σ = 821952. Its totient is φ = 410972.

The previous prime is 616459. The next prime is 616463. The reversal of 616461 is 164616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (616459) and next prime (616463).

It is a cyclic number.

It is not a de Polignac number, because 616461 - 2¹ = 616459 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616463) 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, 102741 + ... + 102746.

It is an arithmetic number, because the mean of its divisors is an integer number (205488).

2⁶¹⁶⁴⁶¹ is an apocalyptic number.

It is an amenable number.

616461 is a deficient number, since it is larger than the sum of its proper divisors (205491).

616461 is a wasteful number, since it uses less digits than its factorization.

616461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205490.

The product of its digits is 864, while the sum is 24.

The square root of 616461 is about 785.1503040820. The cubic root of 616461 is about 85.1076375715.

The spelling of 616461 in words is "six hundred sixteen thousand, four hundred sixty-one".