61357420 has 24 divisors (see below), whose sum is σ = 136430784. Its totient is φ = 23099136.

The previous prime is 61357397. The next prime is 61357421. The reversal of 61357420 is 2475316.

It is not an unprimeable number, because it can be changed into a prime (61357421) 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, 89892 + ... + 90571.

It is an arithmetic number, because the mean of its divisors is an integer number (5684616).

Almost surely, 2^61357420 is an apocalyptic number.

It is an amenable number.

61357420 is an abundant number, since it is smaller than the sum of its proper divisors (75073364).

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

61357420 is a wasteful number, since it uses less digits than its factorization.

61357420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180489 (or 180487 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 61357420 is about 7833.0977269532. The cubic root of 61357420 is about 394.4170646134.

The spelling of 61357420 in words is "sixty-one million, three hundred fifty-seven thousand, four hundred twenty".