65252978 has 32 divisors (see below), whose sum is σ = 119902464. Its totient is φ = 26021952.

The previous prime is 65252947. The next prime is 65253007. The reversal of 65252978 is 87925256.

It is a super-2 number, since 2×65252978² = 8515902275736968, which contains 22 as substring.

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, 9176 + ... + 14652.

It is an arithmetic number, because the mean of its divisors is an integer number (3746952).

Almost surely, 2^65252978 is an apocalyptic number.

65252978 is a deficient number, since it is larger than the sum of its proper divisors (54649486).

65252978 is a wasteful number, since it uses less digits than its factorization.

65252978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546.

The product of its digits is 302400, while the sum is 44.

The square root of 65252978 is about 8077.9315421709. The cubic root of 65252978 is about 402.5935186425.

The spelling of 65252978 in words is "sixty-five million, two hundred fifty-two thousand, nine hundred seventy-eight".