616381485 has 16 divisors (see below), whose sum is σ = 1029089664. Its totient is φ = 314443712.

The previous prime is 616381481. The next prime is 616381517. The reversal of 616381485 is 584183616.

It is a cyclic number.

It is not a de Polignac number, because 616381485 - 2² = 616381481 is a prime.

It is a super-2 number, since 2×616381485² = 759852270101610450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616381481) 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, 892962 + ... + 893651.

It is an arithmetic number, because the mean of its divisors is an integer number (64318104).

Almost surely, 2^616381485 is an apocalyptic number.

It is an amenable number.

616381485 is a deficient number, since it is larger than the sum of its proper divisors (412708179).

616381485 is a wasteful number, since it uses less digits than its factorization.

616381485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786644.

The product of its digits is 138240, while the sum is 42.

The square root of 616381485 is about 24827.0313368312. The cubic root of 616381485 is about 851.0397817547.

The spelling of 616381485 in words is "six hundred sixteen million, three hundred eighty-one thousand, four hundred eighty-five".