70649771 has 8 divisors (see below), whose sum is σ = 76933200. Its totient is φ = 64622880.

The previous prime is 70649759. The next prime is 70649797. The reversal of 70649771 is 17794607.

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 70649771 - 2⁶ = 70649707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70649071) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 63560 + ... + 64661.

It is an arithmetic number, because the mean of its divisors is an integer number (9616650).

Almost surely, 2^70649771 is an apocalyptic number.

70649771 is a deficient number, since it is larger than the sum of its proper divisors (6283429).

70649771 is a wasteful number, since it uses less digits than its factorization.

70649771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128269.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 70649771 is about 8405.3418133946. The cubic root of 70649771 is about 413.3997910975.

The spelling of 70649771 in words is "seventy million, six hundred forty-nine thousand, seven hundred seventy-one".