616043812 has 6 divisors (see below), whose sum is σ = 1078076678. Its totient is φ = 308021904.

The previous prime is 616043809. The next prime is 616043837. The reversal of 616043812 is 218340616.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 569585956 + 46457856 = 23866^2 + 6816^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77005473 + ... + 77005480.

Almost surely, 2^616043812 is an apocalyptic number.

It is an amenable number.

616043812 is a deficient number, since it is larger than the sum of its proper divisors (462032866).

616043812 is a wasteful number, since it uses less digits than its factorization.

616043812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154010957 (or 154010955 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 616043812 is about 24820.2298941811. The cubic root of 616043812 is about 850.8843446558.

The spelling of 616043812 in words is "six hundred sixteen million, forty-three thousand, eight hundred twelve".