2616386947 has 4 divisors (see below), whose sum is σ = 2616592680. Its totient is φ = 2616181216.

The previous prime is 2616386939. The next prime is 2616386953. The reversal of 2616386947 is 7496836162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2616386947 - 2³ = 2616386939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2616386894 and 2616386903.

It is not an unprimeable number, because it can be changed into a prime (2616386977) 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, 82438 + ... + 109675.

It is an arithmetic number, because the mean of its divisors is an integer number (654148170).

Almost surely, 2^2616386947 is an apocalyptic number.

2616386947 is a deficient number, since it is larger than the sum of its proper divisors (205733).

2616386947 is a wasteful number, since it uses less digits than its factorization.

2616386947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205732.

The product of its digits is 2612736, while the sum is 52.

The square root of 2616386947 is about 51150.6299765702. The cubic root of 2616386947 is about 1377.9516883516.

The spelling of 2616386947 in words is "two billion, six hundred sixteen million, three hundred eighty-six thousand, nine hundred forty-seven".