70677649 has 9 divisors (see below), whose sum is σ = 82285371. Its totient is φ = 60530400.

The previous prime is 70677641. The next prime is 70677667. The reversal of 70677649 is 94677607.

The square root of 70677649 is 8407.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 117649 + 70560000 = 343^2 + 8400^2 .

It is not a de Polignac number, because 70677649 - 2³ = 70677641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70677599 and 70677608.

It is not an unprimeable number, because it can be changed into a prime (70677641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 58249 + ... + 59449.

It is an arithmetic number, because the mean of its divisors is an integer number (9142819).

Almost surely, 2^70677649 is an apocalyptic number.

70677649 is the 8407-th square number.

70677649 is the 4204-th centered octagonal number.

It is an amenable number.

70677649 is a deficient number, since it is larger than the sum of its proper divisors (11607722).

70677649 is an frugal number, since it uses more digits than its factorization.

70677649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 46.

The cubic root of 70677649 is about 413.4541590200.

The spelling of 70677649 in words is "seventy million, six hundred seventy-seven thousand, six hundred forty-nine".