70021701 has 6 divisors (see below), whose sum is σ = 101142470. Its totient is φ = 46681128.

The previous prime is 70021697. The next prime is 70021711. The reversal of 70021701 is 10712007.

It can be written as a sum of positive squares in only one way, i.e., 49364676 + 20657025 = 7026^2 + 4545^2 .

It is not a de Polignac number, because 70021701 - 2² = 70021697 is a prime.

It is a super-2 number, since 2×70021701² = 9806077221866802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70021711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3890086 + ... + 3890103.

Almost surely, 2^70021701 is an apocalyptic number.

It is an amenable number.

70021701 is a deficient number, since it is larger than the sum of its proper divisors (31120769).

70021701 is a wasteful number, since it uses less digits than its factorization.

70021701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780195 (or 7780192 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 70021701 is about 8367.8970476458. The cubic root of 70021701 is about 412.1711141579.

Adding to 70021701 its reverse (10712007), we get a palindrome (80733708).

The spelling of 70021701 in words is "seventy million, twenty-one thousand, seven hundred one".