70420465 has 4 divisors (see below), whose sum is σ = 84504564. Its totient is φ = 56336368.

The previous prime is 70420463. The next prime is 70420487. The reversal of 70420465 is 56402407.

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 37564641 + 32855824 = 6129^2 + 5732^2 .

It is a cyclic number.

It is not a de Polignac number, because 70420465 - 2¹ = 70420463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70420463) 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, 7042042 + ... + 7042051.

It is an arithmetic number, because the mean of its divisors is an integer number (21126141).

Almost surely, 2^70420465 is an apocalyptic number.

It is an amenable number.

70420465 is a deficient number, since it is larger than the sum of its proper divisors (14084099).

70420465 is a wasteful number, since it uses less digits than its factorization.

70420465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14084098.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 70420465 is about 8391.6902349884. The cubic root of 70420465 is about 412.9520529360.

The spelling of 70420465 in words is "seventy million, four hundred twenty thousand, four hundred sixty-five".