70300640 has 96 divisors (see below), whose sum is σ = 174636000. Its totient is φ = 26707968.

The previous prime is 70300613. The next prime is 70300651. The reversal of 70300640 is 4600307.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505691 + ... + 505829.

It is an arithmetic number, because the mean of its divisors is an integer number (1819125).

Almost surely, 2^70300640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70300640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87318000).

70300640 is an abundant number, since it is smaller than the sum of its proper divisors (104335360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70300640 is a wasteful number, since it uses less digits than its factorization.

70300640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 70300640 is about 8384.5476920344. The cubic root of 70300640 is about 412.7176983730.

Adding to 70300640 its reverse (4600307), we get a palindrome (74900947).

The spelling of 70300640 in words is "seventy million, three hundred thousand, six hundred forty".