70849961 has 16 divisors (see below), whose sum is σ = 87851904. Its totient is φ = 55638144.

The previous prime is 70849957. The next prime is 70849979. The reversal of 70849961 is 16994807.

It is a cyclic number.

It is not a de Polignac number, because 70849961 - 2² = 70849957 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (70849921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9626 + ... + 15308.

It is an arithmetic number, because the mean of its divisors is an integer number (5490744).

Almost surely, 2^70849961 is an apocalyptic number.

It is an amenable number.

70849961 is a deficient number, since it is larger than the sum of its proper divisors (17001943).

70849961 is a wasteful number, since it uses less digits than its factorization.

70849961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 70849961 is about 8417.2418879346. The cubic root of 70849961 is about 413.7898865354.

The spelling of 70849961 in words is "seventy million, eight hundred forty-nine thousand, nine hundred sixty-one".