616071801 has 4 divisors (see below), whose sum is σ = 821429072. Its totient is φ = 410714532.

The previous prime is 616071787. The next prime is 616071809. The reversal of 616071801 is 108170616.

It is a happy number.

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 de Polignac number, because none of the positive numbers 2^k-616071801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616071809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102678631 + ... + 102678636.

It is an arithmetic number, because the mean of its divisors is an integer number (205357268).

Almost surely, 2^616071801 is an apocalyptic number.

It is an amenable number.

616071801 is a deficient number, since it is larger than the sum of its proper divisors (205357271).

616071801 is a wasteful number, since it uses less digits than its factorization.

616071801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205357270.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 616071801 is about 24820.7937221999. The cubic root of 616071801 is about 850.8972306664.

The spelling of 616071801 in words is "six hundred sixteen million, seventy-one thousand, eight hundred one".