70671617 has 4 divisors (see below), whose sum is σ = 73744320. Its totient is φ = 67598916.

The previous prime is 70671613. The next prime is 70671647. The reversal of 70671617 is 71617607.

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 70671617 - 2² = 70671613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70671613) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1536317 + ... + 1536362.

It is an arithmetic number, because the mean of its divisors is an integer number (18436080).

Almost surely, 2^70671617 is an apocalyptic number.

It is an amenable number.

70671617 is a deficient number, since it is larger than the sum of its proper divisors (3072703).

70671617 is a wasteful number, since it uses less digits than its factorization.

70671617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072702.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 70671617 is about 8406.6412436835. The cubic root of 70671617 is about 413.4423965724.

The spelling of 70671617 in words is "seventy million, six hundred seventy-one thousand, six hundred seventeen".