70545997 has 2 divisors, whose sum is σ = 70545998. Its totient is φ = 70545996.

The previous prime is 70545967. The next prime is 70546001. The reversal of 70545997 is 79954507.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64464841 + 6081156 = 8029^2 + 2466^2 .

It is an emirp because it is prime and its reverse (79954507) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70545997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70545947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35272998 + 35272999.

It is an arithmetic number, because the mean of its divisors is an integer number (35272999).

Almost surely, 2^70545997 is an apocalyptic number.

It is an amenable number.

70545997 is a deficient number, since it is larger than the sum of its proper divisors (1).

70545997 is an equidigital number, since it uses as much as digits as its factorization.

70545997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 70545997 is about 8399.1664467374. The cubic root of 70545997 is about 413.1972843230.

The spelling of 70545997 in words is "seventy million, five hundred forty-five thousand, nine hundred ninety-seven".