70538481 has 24 divisors (see below), whose sum is σ = 110113640. Its totient is φ = 43255296.

The previous prime is 70538449. The next prime is 70538483. The reversal of 70538481 is 18483507.

It can be written as a sum of positive squares in 4 ways, for example, as 8381025 + 62157456 = 2895^2 + 7884^2 .

It is not a de Polignac number, because 70538481 - 2⁵ = 70538449 is a prime.

It is a super-2 number, since 2×70538481² = 9951354603574722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70538483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38535 + ... + 40323.

Almost surely, 2^70538481 is an apocalyptic number.

It is an amenable number.

70538481 is a deficient number, since it is larger than the sum of its proper divisors (39575159).

70538481 is a wasteful number, since it uses less digits than its factorization.

70538481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2142 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 70538481 is about 8398.7190094681. The cubic root of 70538481 is about 413.1826097314.

The spelling of 70538481 in words is "seventy million, five hundred thirty-eight thousand, four hundred eighty-one".