61288630 has 16 divisors (see below), whose sum is σ = 118805904. Its totient is φ = 22629600.

The previous prime is 61288627. The next prime is 61288639. The reversal of 61288630 is 3688216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61288639) 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, 235596 + ... + 235855.

It is an arithmetic number, because the mean of its divisors is an integer number (7425369).

Almost surely, 2^61288630 is an apocalyptic number.

61288630 is a deficient number, since it is larger than the sum of its proper divisors (57517274).

61288630 is a wasteful number, since it uses less digits than its factorization.

61288630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471471.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 61288630 is about 7828.7055124075. The cubic root of 61288630 is about 394.2696111311.

The spelling of 61288630 in words is "sixty-one million, two hundred eighty-eight thousand, six hundred thirty".