70561606 has 4 divisors (see below), whose sum is σ = 105842412. Its totient is φ = 35280802.

The previous prime is 70561501. The next prime is 70561613. The reversal of 70561606 is 60616507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60616507 = 7 ⋅8659501.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17640400 + ... + 17640403.

It is an arithmetic number, because the mean of its divisors is an integer number (26460603).

Almost surely, 2^70561606 is an apocalyptic number.

70561606 is a deficient number, since it is larger than the sum of its proper divisors (35280806).

70561606 is a wasteful number, since it uses less digits than its factorization.

70561606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35280805.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 70561606 is about 8400.0955946941. The cubic root of 70561606 is about 413.2277567385.

The spelling of 70561606 in words is "seventy million, five hundred sixty-one thousand, six hundred six".