70749997 has 2 divisors, whose sum is σ = 70749998. Its totient is φ = 70749996.

The previous prime is 70749983. The next prime is 70750003. The reversal of 70749997 is 79994707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 23222761 = 6894^2 + 4819^2 .

It is a cyclic number.

It is not a de Polignac number, because 70749997 - 2¹¹ = 70747949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70749097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35374998 + 35374999.

It is an arithmetic number, because the mean of its divisors is an integer number (35374999).

Almost surely, 2^70749997 is an apocalyptic number.

It is an amenable number.

70749997 is a deficient number, since it is larger than the sum of its proper divisors (1).

70749997 is an equidigital number, since it uses as much as digits as its factorization.

70749997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The square root of 70749997 is about 8411.3017422989. The cubic root of 70749997 is about 413.5951860690.

It can be divided in two parts, 7074 and 9997, that added together give a palindrome (17071).

The spelling of 70749997 in words is "seventy million, seven hundred forty-nine thousand, nine hundred ninety-seven".