70100001 has 6 divisors (see below), whose sum is σ = 101255570. Its totient is φ = 46733328.

The previous prime is 70099999. The next prime is 70100003. The reversal of 70100001 is 10000107.

It is an interprime number because it is at equal distance from previous prime (70099999) and next prime (70100003).

It can be written as a sum of positive squares in only one way, i.e., 65999376 + 4100625 = 8124^2 + 2025^2 .

It is not a de Polignac number, because 70100001 - 2¹ = 70099999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 7788889 = 70100001 / (7 + 0 + 1 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70100003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3894436 + ... + 3894453.

Almost surely, 2^70100001 is an apocalyptic number.

It is an amenable number.

70100001 is a deficient number, since it is larger than the sum of its proper divisors (31155569).

70100001 is a wasteful number, since it uses less digits than its factorization.

70100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788895 (or 7788892 counting only the distinct ones).

The product of its (nonzero) digits is 7, while the sum is 9.

The square root of 70100001 is about 8372.5743352926. The cubic root of 70100001 is about 412.3246902434.

Adding to 70100001 its reverse (10000107), we get a palindrome (80100108).

The spelling of 70100001 in words is "seventy million, one hundred thousand, one".