70829057 has 8 divisors (see below), whose sum is σ = 76391784. Its totient is φ = 65282688.

The previous prime is 70829051. The next prime is 70829069. The reversal of 70829057 is 75092807.

It is a Cunningham number, because it is equal to 8416²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 4227136 + 66601921 = 2056^2 + 8161^2 .

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 70829057 - 2⁶ = 70828993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70829057.

It is not an unprimeable number, because it can be changed into a prime (70829051) 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, 5813 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (9548973).

Almost surely, 2^70829057 is an apocalyptic number.

It is an amenable number.

70829057 is a deficient number, since it is larger than the sum of its proper divisors (5562727).

70829057 is a wasteful number, since it uses less digits than its factorization.

70829057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 70829057 is about 8416.0000594106. Note that the first 4 decimals coincide. The cubic root of 70829057 is about 413.7491868441.

The spelling of 70829057 in words is "seventy million, eight hundred twenty-nine thousand, fifty-seven".