70639954 has 16 divisors (see below), whose sum is σ = 132106176. Its totient is φ = 27522000.

The previous prime is 70639951. The next prime is 70639991. The reversal of 70639954 is 45993607.

It is a super-2 number, since 2×70639954² = 9980006202244232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70639954.

It is not an unprimeable number, because it can be changed into a prime (70639951) 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, 229197 + ... + 229504.

It is an arithmetic number, because the mean of its divisors is an integer number (8256636).

Almost surely, 2^70639954 is an apocalyptic number.

70639954 is a deficient number, since it is larger than the sum of its proper divisors (61466222).

70639954 is a wasteful number, since it uses less digits than its factorization.

70639954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458721.

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

The square root of 70639954 is about 8404.7578192355. The cubic root of 70639954 is about 413.3806424922.

The spelling of 70639954 in words is "seventy million, six hundred thirty-nine thousand, nine hundred fifty-four".