70609961 has 8 divisors (see below), whose sum is σ = 72079200. Its totient is φ = 69149920.

The previous prime is 70609927. The next prime is 70609967. The reversal of 70609961 is 16990607.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70609961 - 2²⁶ = 3501097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70609967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14450 + ... + 18708.

It is an arithmetic number, because the mean of its divisors is an integer number (9009900).

Almost surely, 2^70609961 is an apocalyptic number.

It is an amenable number.

70609961 is a deficient number, since it is larger than the sum of its proper divisors (1469239).

70609961 is a wasteful number, since it uses less digits than its factorization.

70609961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 70609961 is about 8402.9733428115. The cubic root of 70609961 is about 413.3221284828.

The spelling of 70609961 in words is "seventy million, six hundred nine thousand, nine hundred sixty-one".