70828567 has 2 divisors, whose sum is σ = 70828568. Its totient is φ = 70828566.

The previous prime is 70828531. The next prime is 70828601. The reversal of 70828567 is 76582807.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70828567 - 2²³ = 62439959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70829567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35414283 + 35414284.

It is an arithmetic number, because the mean of its divisors is an integer number (35414284).

Almost surely, 2^70828567 is an apocalyptic number.

70828567 is a deficient number, since it is larger than the sum of its proper divisors (1).

70828567 is an equidigital number, since it uses as much as digits as its factorization.

70828567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 70828567 is about 8415.9709481438. The cubic root of 70828567 is about 413.7482327273.

The spelling of 70828567 in words is "seventy million, eight hundred twenty-eight thousand, five hundred sixty-seven".