61387976 has 16 divisors (see below), whose sum is σ = 123956700. Its totient is φ = 28332864.

The previous prime is 61387957. The next prime is 61387981. The reversal of 61387976 is 67978316.

It can be written as a sum of positive squares in 2 ways, for example, as 60996100 + 391876 = 7810^2 + 626^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61387976.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295031 + ... + 295238.

Almost surely, 2^61387976 is an apocalyptic number.

It is an amenable number.

61387976 is an abundant number, since it is smaller than the sum of its proper divisors (62568724).

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

61387976 is a wasteful number, since it uses less digits than its factorization.

61387976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590288 (or 590284 counting only the distinct ones).

The product of its digits is 381024, while the sum is 47.

The square root of 61387976 is about 7835.0479258266. The cubic root of 61387976 is about 394.4825269909.

The spelling of 61387976 in words is "sixty-one million, three hundred eighty-seven thousand, nine hundred seventy-six".