70749473 has 8 divisors (see below), whose sum is σ = 73348200. Its totient is φ = 68161408.

The previous prime is 70749463. The next prime is 70749479. The reversal of 70749473 is 37494707.

It can be written as a sum of positive squares in 4 ways, for example, as 34845409 + 35904064 = 5903^2 + 5992^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70749473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70749473.

It is not an unprimeable number, because it can be changed into a prime (70749479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12365 + ... + 17157.

It is an arithmetic number, because the mean of its divisors is an integer number (9168525).

Almost surely, 2^70749473 is an apocalyptic number.

It is an amenable number.

70749473 is a deficient number, since it is larger than the sum of its proper divisors (2598727).

70749473 is a wasteful number, since it uses less digits than its factorization.

70749473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 70749473 is about 8411.2705936737. The cubic root of 70749473 is about 413.5941649881.

The spelling of 70749473 in words is "seventy million, seven hundred forty-nine thousand, four hundred seventy-three".