70641538 has 16 divisors (see below), whose sum is σ = 117492480. Its totient is φ = 31582800.

The previous prime is 70641523. The next prime is 70641539. The reversal of 70641538 is 83514607.

It is not an unprimeable number, because it can be changed into a prime (70641539) 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 7 ways as a sum of consecutive naturals, for example, 24978 + ... + 27661.

It is an arithmetic number, because the mean of its divisors is an integer number (7343280).

Almost surely, 2^70641538 is an apocalyptic number.

70641538 is a deficient number, since it is larger than the sum of its proper divisors (46850942).

70641538 is a wasteful number, since it uses less digits than its factorization.

70641538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52713.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 70641538 is about 8404.8520510477. The cubic root of 70641538 is about 413.3837322924.

The spelling of 70641538 in words is "seventy million, six hundred forty-one thousand, five hundred thirty-eight".