61263650 has 24 divisors (see below), whose sum is σ = 130229760. Its totient is φ = 21004560.

The previous prime is 61263647. The next prime is 61263659. The reversal of 61263650 is 5636216.

It is a super-2 number, since 2×61263650² = 7506469622645000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61263659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87170 + ... + 87869.

It is an arithmetic number, because the mean of its divisors is an integer number (5426240).

Almost surely, 2^61263650 is an apocalyptic number.

61263650 is an abundant number, since it is smaller than the sum of its proper divisors (68966110).

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

61263650 is a wasteful number, since it uses less digits than its factorization.

61263650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175058 (or 175053 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 61263650 is about 7827.1099391793. The cubic root of 61263650 is about 394.2160384252.

Adding to 61263650 its reverse (5636216), we get a palindrome (66899866).

The spelling of 61263650 in words is "sixty-one million, two hundred sixty-three thousand, six hundred fifty".