70772540 has 12 divisors (see below), whose sum is σ = 148622376. Its totient is φ = 28309008.

The previous prime is 70772531. The next prime is 70772563. The reversal of 70772540 is 4527707.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70772497 and 70772506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769294 + ... + 1769333.

It is an arithmetic number, because the mean of its divisors is an integer number (12385198).

Almost surely, 2^70772540 is an apocalyptic number.

It is an amenable number.

70772540 is an abundant number, since it is smaller than the sum of its proper divisors (77849836).

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

70772540 is a wasteful number, since it uses less digits than its factorization.

70772540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538636 (or 3538634 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 70772540 is about 8412.6416778560. The cubic root of 70772540 is about 413.6391092095.

The spelling of 70772540 in words is "seventy million, seven hundred seventy-two thousand, five hundred forty".