70487421 has 4 divisors (see below), whose sum is σ = 93983232. Its totient is φ = 46991612.

The previous prime is 70487411. The next prime is 70487437. The reversal of 70487421 is 12478407.

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.

It is a cyclic number.

It is not a de Polignac number, because 70487421 - 2¹⁹ = 69963133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70487411) 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, 11747901 + ... + 11747906.

It is an arithmetic number, because the mean of its divisors is an integer number (23495808).

Almost surely, 2^70487421 is an apocalyptic number.

It is an amenable number.

70487421 is a deficient number, since it is larger than the sum of its proper divisors (23495811).

70487421 is a wasteful number, since it uses less digits than its factorization.

70487421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23495810.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 70487421 is about 8395.6787099079. The cubic root of 70487421 is about 413.0828901823.

The spelling of 70487421 in words is "seventy million, four hundred eighty-seven thousand, four hundred twenty-one".