70828357 has 2 divisors, whose sum is σ = 70828358. Its totient is φ = 70828356.

The previous prime is 70828349. The next prime is 70828363. The reversal of 70828357 is 75382807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70543201 + 285156 = 8399^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 70828357 - 2³ = 70828349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70828337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35414178 + 35414179.

It is an arithmetic number, because the mean of its divisors is an integer number (35414179).

Almost surely, 2^70828357 is an apocalyptic number.

It is an amenable number.

70828357 is a deficient number, since it is larger than the sum of its proper divisors (1).

70828357 is an equidigital number, since it uses as much as digits as its factorization.

70828357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 70828357 is about 8415.9584718557. The cubic root of 70828357 is about 413.7478238188.

The spelling of 70828357 in words is "seventy million, eight hundred twenty-eight thousand, three hundred fifty-seven".