70662540 has 144 divisors (see below), whose sum is σ = 228741408. Its totient is φ = 16146432.

The previous prime is 70662499. The next prime is 70662587. The reversal of 70662540 is 4526607.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70662498 and 70662507.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 967944 + ... + 968016.

It is an arithmetic number, because the mean of its divisors is an integer number (1588482).

Almost surely, 2^70662540 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 70662540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114370704).

70662540 is an abundant number, since it is smaller than the sum of its proper divisors (158078868).

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

70662540 is a wasteful number, since it uses less digits than its factorization.

70662540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 70662540 is about 8406.1013555631. The cubic root of 70662540 is about 413.4246950892.

The spelling of 70662540 in words is "seventy million, six hundred sixty-two thousand, five hundred forty".