1020655567 has 8 divisors (see below), whose sum is σ = 1065376224. Its totient is φ = 975963648.

The previous prime is 1020655553. The next prime is 1020655583. The reversal of 1020655567 is 7655560201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020655567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020955567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98883 + ... + 108715.

It is an arithmetic number, because the mean of its divisors is an integer number (133172028).

Almost surely, 2^1020655567 is an apocalyptic number.

1020655567 is a deficient number, since it is larger than the sum of its proper divisors (44720657).

1020655567 is an equidigital number, since it uses as much as digits as its factorization.

1020655567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14369.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 1020655567 is about 31947.7004962799. The cubic root of 1020655567 is about 1006.8383197899.

The spelling of 1020655567 in words is "one billion, twenty million, six hundred fifty-five thousand, five hundred sixty-seven".