70785097 has 4 divisors (see below), whose sum is σ = 70802116. Its totient is φ = 70768080.

The previous prime is 70785079. The next prime is 70785109. The reversal of 70785097 is 79058707.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 38738176 + 32046921 = 6224^2 + 5661^2 .

It is a cyclic number.

It is not a de Polignac number, because 70785097 - 2²³ = 62396489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70785017) 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, 2347 + ... + 12127.

It is an arithmetic number, because the mean of its divisors is an integer number (17700529).

Almost surely, 2^70785097 is an apocalyptic number.

It is an amenable number.

70785097 is a deficient number, since it is larger than the sum of its proper divisors (17019).

70785097 is an equidigital number, since it uses as much as digits as its factorization.

70785097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17018.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 70785097 is about 8413.3879620519. The cubic root of 70785097 is about 413.6635714239.

The spelling of 70785097 in words is "seventy million, seven hundred eighty-five thousand, ninety-seven".