70051620 has 48 divisors (see below), whose sum is σ = 200325888. Its totient is φ = 18282240.

The previous prime is 70051589. The next prime is 70051621. The reversal of 70051620 is 2615007.

It is not an unprimeable number, because it can be changed into a prime (70051621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9601 + ... + 15240.

It is an arithmetic number, because the mean of its divisors is an integer number (4173456).

Almost surely, 2^70051620 is an apocalyptic number.

It is an amenable number.

70051620 is an abundant number, since it is smaller than the sum of its proper divisors (130274268).

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

70051620 is a wasteful number, since it uses less digits than its factorization.

70051620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24900 (or 24898 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 70051620 is about 8369.6845818705. The cubic root of 70051620 is about 412.2298102070.

Adding to 70051620 its reverse (2615007), we get a palindrome (72666627).

The spelling of 70051620 in words is "seventy million, fifty-one thousand, six hundred twenty".