70672897 has 4 divisors (see below), whose sum is σ = 71096256. Its totient is φ = 70249540.

The previous prime is 70672883. The next prime is 70672907. The reversal of 70672897 is 79827607.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70672897 - 2⁷ = 70672769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70672817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211429 + ... + 211762.

It is an arithmetic number, because the mean of its divisors is an integer number (17774064).

Almost surely, 2^70672897 is an apocalyptic number.

It is an amenable number.

70672897 is a deficient number, since it is larger than the sum of its proper divisors (423359).

70672897 is a wasteful number, since it uses less digits than its factorization.

70672897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423358.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 70672897 is about 8406.7173736245. The cubic root of 70672897 is about 413.4448926384. Note that the first 3 decimals are identical.

The spelling of 70672897 in words is "seventy million, six hundred seventy-two thousand, eight hundred ninety-seven".