616469641 has 4 divisors (see below), whose sum is σ = 625152384. Its totient is φ = 607786900.

The previous prime is 616469639. The next prime is 616469663. The reversal of 616469641 is 146964616.

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 a cyclic number.

It is not a de Polignac number, because 616469641 - 2¹ = 616469639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616469671) 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, 4341265 + ... + 4341406.

It is an arithmetic number, because the mean of its divisors is an integer number (156288096).

Almost surely, 2^616469641 is an apocalyptic number.

It is an amenable number.

616469641 is a deficient number, since it is larger than the sum of its proper divisors (8682743).

616469641 is an equidigital number, since it uses as much as digits as its factorization.

616469641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8682742.

The product of its digits is 186624, while the sum is 43.

The square root of 616469641 is about 24828.8066769227. The cubic root of 616469641 is about 851.0803522393.

The spelling of 616469641 in words is "six hundred sixteen million, four hundred sixty-nine thousand, six hundred forty-one".