70631449 has 16 divisors (see below), whose sum is σ = 82083456. Its totient is φ = 59529600.

The previous prime is 70631377. The next prime is 70631453. The reversal of 70631449 is 94413607.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 70631449 - 2¹⁵ = 70598681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70631489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135309 + ... + 135829.

It is an arithmetic number, because the mean of its divisors is an integer number (5130216).

Almost surely, 2^70631449 is an apocalyptic number.

It is an amenable number.

70631449 is a deficient number, since it is larger than the sum of its proper divisors (11452007).

70631449 is a wasteful number, since it uses less digits than its factorization.

70631449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 70631449 is about 8404.2518405864. The cubic root of 70631449 is about 413.3640515816.

The spelling of 70631449 in words is "seventy million, six hundred thirty-one thousand, four hundred forty-nine".