70491000 has 64 divisors (see below), whose sum is σ = 219941280. Its totient is φ = 18796800.

The previous prime is 70490971. The next prime is 70491011. The reversal of 70491000 is 19407.

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, 8749 + ... + 14748.

Almost surely, 2^70491000 is an apocalyptic number.

It is an amenable number.

70491000 is an abundant number, since it is smaller than the sum of its proper divisors (149450280).

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

70491000 is a wasteful number, since it uses less digits than its factorization.

70491000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23521 (or 23507 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 70491000 is about 8395.8918525669. The cubic root of 70491000 is about 413.0898814943.

The spelling of 70491000 in words is "seventy million, four hundred ninety-one thousand".