70921197 has 16 divisors (see below), whose sum is σ = 105336000. Its totient is φ = 47160432.

The previous prime is 70921189. The next prime is 70921217. The reversal of 70921197 is 79112907.

It is not a de Polignac number, because 70921197 - 2³ = 70921189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70921117) 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, 8179 + ... + 14447.

It is an arithmetic number, because the mean of its divisors is an integer number (6583500).

Almost surely, 2^70921197 is an apocalyptic number.

It is an amenable number.

70921197 is a deficient number, since it is larger than the sum of its proper divisors (34414803).

70921197 is a wasteful number, since it uses less digits than its factorization.

70921197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697 (or 6691 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 70921197 is about 8421.4723772034. The cubic root of 70921197 is about 413.9285215812.

The spelling of 70921197 in words is "seventy million, nine hundred twenty-one thousand, one hundred ninety-seven".