70497409 has 8 divisors (see below), whose sum is σ = 72334080. Its totient is φ = 68666400.

The previous prime is 70497403. The next prime is 70497431. The reversal of 70497409 is 90479407.

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

It is a cyclic number.

It is not a de Polignac number, because 70497409 - 2¹³ = 70489217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70497403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36744 + ... + 38614.

It is an arithmetic number, because the mean of its divisors is an integer number (9041760).

Almost surely, 2^70497409 is an apocalyptic number.

It is an amenable number.

70497409 is a deficient number, since it is larger than the sum of its proper divisors (1836671).

70497409 is a wasteful number, since it uses less digits than its factorization.

70497409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 70497409 is about 8396.2735186510. The cubic root of 70497409 is about 413.1024004107.

The spelling of 70497409 in words is "seventy million, four hundred ninety-seven thousand, four hundred nine".