70558949 has 4 divisors (see below), whose sum is σ = 70592940. Its totient is φ = 70524960.

The previous prime is 70558931. The next prime is 70558987. The reversal of 70558949 is 94985507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94985507 = 2221 ⋅42767.

It can be written as a sum of positive squares in 2 ways, for example, as 32982049 + 37576900 = 5743^2 + 6130^2 .

It is a cyclic number.

It is not a de Polignac number, because 70558949 - 2⁸ = 70558693 is a prime.

It is a super-4 number, since 4×70558949⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70558919) 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, 13664 + ... + 18105.

It is an arithmetic number, because the mean of its divisors is an integer number (17648235).

Almost surely, 2^70558949 is an apocalyptic number.

It is an amenable number.

70558949 is a deficient number, since it is larger than the sum of its proper divisors (33991).

70558949 is a wasteful number, since it uses less digits than its factorization.

70558949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33990.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 70558949 is about 8399.9374402432. The cubic root of 70558949 is about 413.2225699710. Note that the first 3 decimals are identical.

The spelling of 70558949 in words is "seventy million, five hundred fifty-eight thousand, nine hundred forty-nine".