70615447 has 4 divisors (see below), whose sum is σ = 80703376. Its totient is φ = 60527520.

The previous prime is 70615411. The next prime is 70615453. The reversal of 70615447 is 74451607.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70615447 - 2¹¹ = 70613399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70615477) 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, 5043954 + ... + 5043967.

It is an arithmetic number, because the mean of its divisors is an integer number (20175844).

Almost surely, 2^70615447 is an apocalyptic number.

70615447 is a deficient number, since it is larger than the sum of its proper divisors (10087929).

70615447 is a wasteful number, since it uses less digits than its factorization.

70615447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087928.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 70615447 is about 8403.2997685433. The cubic root of 70615447 is about 413.3328324800.

The spelling of 70615447 in words is "seventy million, six hundred fifteen thousand, four hundred forty-seven".