70639092 has 36 divisors (see below), whose sum is σ = 179158980. Its totient is φ = 23467392.

The previous prime is 70639091. The next prime is 70639103. The reversal of 70639092 is 29093607.

It can be written as a sum of positive squares in 2 ways, for example, as 7817616 + 62821476 = 2796^2 + 7926^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70639091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8134 + ... + 14402.

Almost surely, 2^70639092 is an apocalyptic number.

It is an amenable number.

70639092 is an abundant number, since it is smaller than the sum of its proper divisors (108519888).

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

70639092 is a wasteful number, since it uses less digits than its factorization.

70639092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592 (or 6587 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 70639092 is about 8404.7065386009. The cubic root of 70639092 is about 413.3789610284.

The spelling of 70639092 in words is "seventy million, six hundred thirty-nine thousand, ninety-two".