70447073 has 2 divisors, whose sum is σ = 70447074. Its totient is φ = 70447072.

The previous prime is 70447063. The next prime is 70447081. The reversal of 70447073 is 37074407.

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., 70442449 + 4624 = 8393^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 70447073 - 2¹⁶ = 70381537 is a prime.

It is not a weakly prime, because it can be changed into another prime (70447033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35223536 + 35223537.

It is an arithmetic number, because the mean of its divisors is an integer number (35223537).

Almost surely, 2^70447073 is an apocalyptic number.

It is an amenable number.

70447073 is a deficient number, since it is larger than the sum of its proper divisors (1).

70447073 is an equidigital number, since it uses as much as digits as its factorization.

70447073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 70447073 is about 8393.2754631312. The cubic root of 70447073 is about 413.0040569693.

The spelling of 70447073 in words is "seventy million, four hundred forty-seven thousand, seventy-three".