1020634655 has 8 divisors (see below), whose sum is σ = 1226033952. Its totient is φ = 815659488.

The previous prime is 1020634639. The next prime is 1020634663. The reversal of 1020634655 is 5564360201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020634655 - 2⁴ = 1020634639 is a prime.

It is a Duffinian number.

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, 100712 + ... + 110381.

It is an arithmetic number, because the mean of its divisors is an integer number (153254244).

Almost surely, 2^1020634655 is an apocalyptic number.

1020634655 is a deficient number, since it is larger than the sum of its proper divisors (205399297).

1020634655 is an equidigital number, since it uses as much as digits as its factorization.

1020634655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212065.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1020634655 is about 31947.3732097022. The cubic root of 1020634655 is about 1006.8314434425.

Adding to 1020634655 its reverse (5564360201), we get a palindrome (6584994856).

The spelling of 1020634655 in words is "one billion, twenty million, six hundred thirty-four thousand, six hundred fifty-five".