1061620455 has 16 divisors (see below), whose sum is σ = 1941249024. Its totient is φ = 485312160.

The previous prime is 1061620411. The next prime is 1061620481. The reversal of 1061620455 is 5540261601.

It is not a de Polignac number, because 1061620455 - 2⁹ = 1061619943 is a prime.

It is a super-2 number, since 2×1061620455² = 2254075980948814050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5055231 + ... + 5055440.

It is an arithmetic number, because the mean of its divisors is an integer number (121328064).

Almost surely, 2^1061620455 is an apocalyptic number.

1061620455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1061620455 is a deficient number, since it is larger than the sum of its proper divisors (879628569).

1061620455 is a wasteful number, since it uses less digits than its factorization.

1061620455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10110686.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1061620455 is about 32582.5176283233. The cubic root of 1061620455 is about 1020.1321291733.

The spelling of 1061620455 in words is "one billion, sixty-one million, six hundred twenty thousand, four hundred fifty-five".