61464820 has 48 divisors (see below), whose sum is σ = 132991488. Its totient is φ = 23852160.

The previous prime is 61464817. The next prime is 61464859. The reversal of 61464820 is 2846416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100957 + ... + 101563.

It is an arithmetic number, because the mean of its divisors is an integer number (2770656).

Almost surely, 2^61464820 is an apocalyptic number.

It is an amenable number.

61464820 is an abundant number, since it is smaller than the sum of its proper divisors (71526668).

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

61464820 is a wasteful number, since it uses less digits than its factorization.

61464820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 61464820 is about 7839.9502549442. The cubic root of 61464820 is about 394.6470596212.

The spelling of 61464820 in words is "sixty-one million, four hundred sixty-four thousand, eight hundred twenty".