61503642 has 24 divisors (see below), whose sum is σ = 133548480. Its totient is φ = 20456520.

The previous prime is 61503641. The next prime is 61503643. The reversal of 61503642 is 24630516.

61503642 is a `hidden beast` number, since 6 + 15 + 0 + 3 + 642 = 666.

It is an interprime number because it is at equal distance from previous prime (61503641) and next prime (61503643).

It is not an unprimeable number, because it can be changed into a prime (61503641) 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, 5359 + ... + 12317.

It is an arithmetic number, because the mean of its divisors is an integer number (5564520).

Almost surely, 2^61503642 is an apocalyptic number.

61503642 is an abundant number, since it is smaller than the sum of its proper divisors (72044838).

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

61503642 is a wasteful number, since it uses less digits than its factorization.

61503642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7458 (or 7455 counting only the distinct ones).

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

The square root of 61503642 is about 7842.4257726803. The cubic root of 61503642 is about 394.7301302494.

The spelling of 61503642 in words is "sixty-one million, five hundred three thousand, six hundred forty-two".