61965378 has 16 divisors (see below), whose sum is σ = 137700960. Its totient is φ = 20655108.

The previous prime is 61965367. The next prime is 61965389. The reversal of 61965378 is 87356916.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61965367) and next prime (61965389).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573700 + ... + 573807.

It is an arithmetic number, because the mean of its divisors is an integer number (8606310).

Almost surely, 2^61965378 is an apocalyptic number.

61965378 is an abundant number, since it is smaller than the sum of its proper divisors (75735582).

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

61965378 is a wasteful number, since it uses less digits than its factorization.

61965378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147518 (or 1147512 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 61965378 is about 7871.8090678065. The cubic root of 61965378 is about 395.7154751412.

The spelling of 61965378 in words is "sixty-one million, nine hundred sixty-five thousand, three hundred seventy-eight".