70646740 has 24 divisors (see below), whose sum is σ = 148983912. Its totient is φ = 28139520.

The previous prime is 70646707. The next prime is 70646753. The reversal of 70646740 is 4764607.

It can be written as a sum of positive squares in 4 ways, for example, as 37307664 + 33339076 = 6108^2 + 5774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70646696 and 70646705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2509 + ... + 12148.

It is an arithmetic number, because the mean of its divisors is an integer number (6207663).

Almost surely, 2^70646740 is an apocalyptic number.

It is an amenable number.

70646740 is an abundant number, since it is smaller than the sum of its proper divisors (78337172).

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

70646740 is a wasteful number, since it uses less digits than its factorization.

70646740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14907 (or 14905 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 70646740 is about 8405.1615094536. The cubic root of 70646740 is about 413.3938791524.

The spelling of 70646740 in words is "seventy million, six hundred forty-six thousand, seven hundred forty".