70621340 has 24 divisors (see below), whose sum is σ = 148463952. Its totient is φ = 28218240.

The previous prime is 70621337. The next prime is 70621361. The reversal of 70621340 is 4312607.

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, 32075 + ... + 34205.

It is an arithmetic number, because the mean of its divisors is an integer number (6185998).

Almost surely, 2^70621340 is an apocalyptic number.

It is an amenable number.

70621340 is an abundant number, since it is smaller than the sum of its proper divisors (77842612).

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

70621340 is a wasteful number, since it uses less digits than its factorization.

70621340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797 (or 3795 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 70621340 is about 8403.6503972976. The cubic root of 70621340 is about 413.3443299768.

Adding to 70621340 its reverse (4312607), we get a palindrome (74933947).

The spelling of 70621340 in words is "seventy million, six hundred twenty-one thousand, three hundred forty".