70639459 has 8 divisors (see below), whose sum is σ = 77128128. Its totient is φ = 64161960.

The previous prime is 70639441. The next prime is 70639469. The reversal of 70639459 is 95493607.

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 70639459 - 2²¹ = 68542307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70639469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15924 + ... + 19870.

It is an arithmetic number, because the mean of its divisors is an integer number (9641016).

Almost surely, 2^70639459 is an apocalyptic number.

70639459 is a deficient number, since it is larger than the sum of its proper divisors (6488669).

70639459 is a wasteful number, since it uses less digits than its factorization.

70639459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5585.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 70639459 is about 8404.7283715775. The cubic root of 70639459 is about 413.3796769201.

The spelling of 70639459 in words is "seventy million, six hundred thirty-nine thousand, four hundred fifty-nine".