70381642 has 8 divisors (see below), whose sum is σ = 105642756. Its totient is φ = 35167392.

The previous prime is 70381613. The next prime is 70381673. The reversal of 70381642 is 24618307.

It can be written as a sum of positive squares in 2 ways, for example, as 68740681 + 1640961 = 8291^2 + 1281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 7683 + ... + 14134.

Almost surely, 2^70381642 is an apocalyptic number.

70381642 is a deficient number, since it is larger than the sum of its proper divisors (35261114).

70381642 is a wasteful number, since it uses less digits than its factorization.

70381642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23432.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 70381642 is about 8389.3767348951. The cubic root of 70381642 is about 412.8761517776.

Adding to 70381642 its reverse (24618307), we get a palindrome (94999949).

The spelling of 70381642 in words is "seventy million, three hundred eighty-one thousand, six hundred forty-two".