70638036 has 24 divisors (see below), whose sum is σ = 188368320. Its totient is φ = 20182272.

The previous prime is 70638031. The next prime is 70638041. The reversal of 70638036 is 63083607.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70638031) and next prime (70638041).

It is a junction number, because it is equal to n+sod(n) for n = 70637988 and 70638006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70638031) 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, 420381 + ... + 420548.

It is an arithmetic number, because the mean of its divisors is an integer number (7848680).

Almost surely, 2^70638036 is an apocalyptic number.

It is an amenable number.

70638036 is an abundant number, since it is smaller than the sum of its proper divisors (117730284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70638036 is a wasteful number, since it uses less digits than its factorization.

70638036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840943 (or 840941 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 70638036 is about 8404.6437164225. The cubic root of 70638036 is about 413.3769011192.

The spelling of 70638036 in words is "seventy million, six hundred thirty-eight thousand, thirty-six".