61530246 has 32 divisors (see below), whose sum is σ = 143932800. Its totient is φ = 19430280.

The previous prime is 61530241. The next prime is 61530251. The reversal of 61530246 is 64203516.

61530246 is a `hidden beast` number, since 615 + 3 + 0 + 2 + 46 = 666.

It is an interprime number because it is at equal distance from previous prime (61530241) and next prime (61530251).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61530241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28960 + ... + 31011.

It is an arithmetic number, because the mean of its divisors is an integer number (4497900).

Almost surely, 2^61530246 is an apocalyptic number.

61530246 is an abundant number, since it is smaller than the sum of its proper divisors (82402554).

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

61530246 is a wasteful number, since it uses less digits than its factorization.

61530246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60001 (or 59995 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 61530246 is about 7844.1217481628. The cubic root of 61530246 is about 394.7870368338.

It can be divided in two parts, 61530 and 246, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61530246 in words is "sixty-one million, five hundred thirty thousand, two hundred forty-six".