70072001 has 2 divisors, whose sum is σ = 70072002. Its totient is φ = 70072000.

The previous prime is 70071941. The next prime is 70072021. The reversal of 70072001 is 10027007.

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., 59985025 + 10086976 = 7745^2 + 3176^2 .

It is a cyclic number.

It is not a de Polignac number, because 70072001 - 2¹⁴ = 70055617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (70072021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35036000 + 35036001.

It is an arithmetic number, because the mean of its divisors is an integer number (35036001).

Almost surely, 2^70072001 is an apocalyptic number.

It is an amenable number.

70072001 is a deficient number, since it is larger than the sum of its proper divisors (1).

70072001 is an equidigital number, since it uses as much as digits as its factorization.

70072001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98, while the sum is 17.

The square root of 70072001 is about 8370.9020421935. The cubic root of 70072001 is about 412.2697847338.

Adding to 70072001 its reverse (10027007), we get a palindrome (80099008).

The spelling of 70072001 in words is "seventy million, seventy-two thousand, one".