670540052 has 48 divisors (see below), whose sum is σ = 1451654400. Its totient is φ = 263907072.

The previous prime is 670540049. The next prime is 670540099. The reversal of 670540052 is 250045076.

It is a super-2 number, since 2×670540052² = 899247922672325408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 670539997 and 670540024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67808 + ... + 77064.

It is an arithmetic number, because the mean of its divisors is an integer number (30242800).

Almost surely, 2^670540052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670540052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725827200).

670540052 is an abundant number, since it is smaller than the sum of its proper divisors (781114348).

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

670540052 is a wasteful number, since it uses less digits than its factorization.

670540052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480 (or 9478 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 670540052 is about 25894.7881242539. The cubic root of 670540052 is about 875.2690555448.

The spelling of 670540052 in words is "six hundred seventy million, five hundred forty thousand, fifty-two".