70363421 has 4 divisors (see below), whose sum is σ = 72079644. Its totient is φ = 68647200.

The previous prime is 70363411. The next prime is 70363427. The reversal of 70363421 is 12436307.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42432196 + 27931225 = 6514^2 + 5285^2 .

It is a cyclic number.

It is not a de Polignac number, because 70363421 - 2¹⁸ = 70101277 is a prime.

It is a super-2 number, since 2×70363421² = 9902022029646482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70363427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858050 + ... + 858131.

It is an arithmetic number, because the mean of its divisors is an integer number (18019911).

Almost surely, 2^70363421 is an apocalyptic number.

It is an amenable number.

70363421 is a deficient number, since it is larger than the sum of its proper divisors (1716223).

70363421 is a wasteful number, since it uses less digits than its factorization.

70363421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716222.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 70363421 is about 8388.2907078856. The cubic root of 70363421 is about 412.8405190688.

Adding to 70363421 its reverse (12436307), we get a palindrome (82799728).

The spelling of 70363421 in words is "seventy million, three hundred sixty-three thousand, four hundred twenty-one".