947616505 has 16 divisors (see below), whose sum is σ = 1241195904. Its totient is φ = 688798080.

The previous prime is 947616493. The next prime is 947616511. The reversal of 947616505 is 505616749.

It is not a de Polignac number, because 947616505 - 2¹⁵ = 947583737 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132532 + ... + 139498.

It is an arithmetic number, because the mean of its divisors is an integer number (77574744).

Almost surely, 2^947616505 is an apocalyptic number.

It is an amenable number.

947616505 is a deficient number, since it is larger than the sum of its proper divisors (293579399).

947616505 is a wasteful number, since it uses less digits than its factorization.

947616505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 947616505 is about 30783.3803374483. The cubic root of 947616505 is about 982.2247474853.

The spelling of 947616505 in words is "nine hundred forty-seven million, six hundred sixteen thousand, five hundred five".