70477531 has 2 divisors, whose sum is σ = 70477532. Its totient is φ = 70477530.

The previous prime is 70477523. The next prime is 70477549. The reversal of 70477531 is 13577407.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70477531 - 2³ = 70477523 is a prime.

It is a super-2 number, since 2×70477531² = 9934164751711922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70477571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35238765 + 35238766.

It is an arithmetic number, because the mean of its divisors is an integer number (35238766).

Almost surely, 2^70477531 is an apocalyptic number.

70477531 is a deficient number, since it is larger than the sum of its proper divisors (1).

70477531 is an equidigital number, since it uses as much as digits as its factorization.

70477531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 70477531 is about 8395.0896957686. The cubic root of 70477531 is about 413.0635695678.

The spelling of 70477531 in words is "seventy million, four hundred seventy-seven thousand, five hundred thirty-one".