70677979 has 2 divisors, whose sum is σ = 70677980. Its totient is φ = 70677978.

The previous prime is 70677953. The next prime is 70678007. The reversal of 70677979 is 97977607.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70677979 - 2⁵ = 70677947 is a prime.

It is not a weakly prime, because it can be changed into another prime (70677949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35338989 + 35338990.

It is an arithmetic number, because the mean of its divisors is an integer number (35338990).

Almost surely, 2^70677979 is an apocalyptic number.

70677979 is a deficient number, since it is larger than the sum of its proper divisors (1).

70677979 is an equidigital number, since it uses as much as digits as its factorization.

70677979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166886, while the sum is 52.

The square root of 70677979 is about 8407.0196264788. The cubic root of 70677979 is about 413.4548025033.

The spelling of 70677979 in words is "seventy million, six hundred seventy-seven thousand, nine hundred seventy-nine".