70485421 has 4 divisors (see below), whose sum is σ = 74195200. Its totient is φ = 66775644.

The previous prime is 70485403. The next prime is 70485427. The reversal of 70485421 is 12458407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12458407 = 13 ⋅958339.

It is a cyclic number.

It is not a de Polignac number, because 70485421 - 2⁷ = 70485293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70485427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1854861 + ... + 1854898.

It is an arithmetic number, because the mean of its divisors is an integer number (18548800).

Almost surely, 2^70485421 is an apocalyptic number.

It is an amenable number.

70485421 is a deficient number, since it is larger than the sum of its proper divisors (3709779).

70485421 is a wasteful number, since it uses less digits than its factorization.

70485421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709778.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 70485421 is about 8395.5596001696. The cubic root of 70485421 is about 413.0789832271.

The spelling of 70485421 in words is "seventy million, four hundred eighty-five thousand, four hundred twenty-one".