70477081 has 4 divisors (see below), whose sum is σ = 70526464. Its totient is φ = 70427700.

The previous prime is 70477079. The next prime is 70477091. The reversal of 70477081 is 18077407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18077407 = 2591 ⋅6977.

It is a cyclic number.

It is not a de Polignac number, because 70477081 - 2¹ = 70477079 is a prime.

It is a super-2 number, since 2×70477081² = 9934037892561122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70477051) 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, 22485 + ... + 25426.

It is an arithmetic number, because the mean of its divisors is an integer number (17631616).

Almost surely, 2^70477081 is an apocalyptic number.

It is an amenable number.

70477081 is a deficient number, since it is larger than the sum of its proper divisors (49383).

70477081 is a wasteful number, since it uses less digits than its factorization.

70477081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49382.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 70477081 is about 8395.0628943445. The cubic root of 70477081 is about 413.0626904271.

The spelling of 70477081 in words is "seventy million, four hundred seventy-seven thousand, eighty-one".