70649158 has 8 divisors (see below), whose sum is σ = 106365600. Its totient is φ = 35193960.

The previous prime is 70649153. The next prime is 70649167. The reversal of 70649158 is 85194607.

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

It is a super-2 number, since 2×70649158² = 9982607052217928, 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 70649158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70649153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64633 + ... + 65716.

It is an arithmetic number, because the mean of its divisors is an integer number (13295700).

Almost surely, 2^70649158 is an apocalyptic number.

70649158 is a deficient number, since it is larger than the sum of its proper divisors (35716442).

70649158 is a wasteful number, since it uses less digits than its factorization.

70649158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130622.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 70649158 is about 8405.3053484094. The cubic root of 70649158 is about 413.3985954587.

It can be divided in two parts, 70649 and 158, that added together give a palindrome (70807).

The spelling of 70649158 in words is "seventy million, six hundred forty-nine thousand, one hundred fifty-eight".