70620553 has 4 divisors (see below), whose sum is σ = 70655508. Its totient is φ = 70585600.

The previous prime is 70620551. The next prime is 70620569. The reversal of 70620553 is 35502607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7767369 + 62853184 = 2787^2 + 7928^2 .

It is a cyclic number.

It is not a de Polignac number, because 70620553 - 2¹ = 70620551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70620551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14248 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (17663877).

Almost surely, 2^70620553 is an apocalyptic number.

It is an amenable number.

70620553 is a deficient number, since it is larger than the sum of its proper divisors (34955).

70620553 is a wasteful number, since it uses less digits than its factorization.

70620553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34954.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 70620553 is about 8403.6035722778. The cubic root of 70620553 is about 413.3427945429.

The spelling of 70620553 in words is "seventy million, six hundred twenty thousand, five hundred fifty-three".