1263064620 has 48 divisors (see below), whose sum is σ = 3650669568. Its totient is φ = 325951680.

The previous prime is 1263064613. The next prime is 1263064639. The reversal of 1263064620 is 264603621.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 337674 + ... + 341393.

It is an arithmetic number, because the mean of its divisors is an integer number (76055616).

Almost surely, 2^1263064620 is an apocalyptic number.

1263064620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263064620 is an abundant number, since it is smaller than the sum of its proper divisors (2387604948).

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

1263064620 is a wasteful number, since it uses less digits than its factorization.

1263064620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679110 (or 679108 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1263064620 is about 35539.6204256601. The cubic root of 1263064620 is about 1080.9572617024.

The spelling of 1263064620 in words is "one billion, two hundred sixty-three million, sixty-four thousand, six hundred twenty".