70071621 has 8 divisors (see below), whose sum is σ = 94336320. Its totient is φ = 46260672.

The previous prime is 70071613. The next prime is 70071629. The reversal of 70071621 is 12617007.

It is an interprime number because it is at equal distance from previous prime (70071613) and next prime (70071629).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70071621 - 2³ = 70071613 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70071591 and 70071600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70071629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113076 + ... + 113693.

It is an arithmetic number, because the mean of its divisors is an integer number (11792040).

Almost surely, 2^70071621 is an apocalyptic number.

It is an amenable number.

70071621 is a deficient number, since it is larger than the sum of its proper divisors (24264699).

70071621 is a wasteful number, since it uses less digits than its factorization.

70071621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226875.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 70071621 is about 8370.8793444894. The cubic root of 70071621 is about 412.2690394871.

Adding to 70071621 its reverse (12617007), we get a palindrome (82688628).

The spelling of 70071621 in words is "seventy million, seventy-one thousand, six hundred twenty-one".